The Rainbow Line arrives at a station in Zawame City and with no Shadow Creeps in the area, the ToQgers decide to make a stop to enjoy the local attractions. While exploring the city, Right and the others watch a dance performance from Team Gaim when Moguraroid of the Badan Empire appears to cause a ruckus. Kouta Kazuraba appears to help his friend Mai and both Armored Rider Gaim and the ToQgers transform to fight the enemy. After being briefly surprised by each other's powers, the heroes confront Moguraroid who digs a hole in the ground to call for reinforcements, but opens a Crack instead from which a Lion Inves appears. Armored Rider Gaim and ToQ 1gou pursue the Inves through the Crack while the other ToQgers drive Moguraroid away, assisted by Mitsuzane Kureshima who transforms into Armored Rider Ryugen. On the other side of the Crack, Right is about to eat a fruit when Kouta stops him from doing so, warning him of the dangers of the Helheim Forest. Once reunited at Drupers, Kouta, Mitsuzane, Mai, and the ToQgers become friends and while Mai, Kagura, and Mio decide to hang out together, Right invites Kouta to show him the Ressha while Mitsuzane consults with his brother Takatora, head of the Yggdrasill Corporation about the Badan Empire. Despite Kouta having enough Imagination to see the Rainbow Line, he lacks a pass to enter it, until a mysterious man introducing himself as Narutaki appears along with a handpuppet version of himself, similar to Ticket, and lends Kouta one before leaving into a dimensional wall without further explanation. Once inside the Ressha, Right learns from Kouta about his fight to stop the Helheim Forest from spreading into Zawame City and offers his help, but Kouta refuses, claiming that the ToQgers are already busy with their search for their hometown while confronting the Shadow Line. Meanwhile, Mai, Mio, and Kagura have another encounter with Moguraroid who once again attempts to bring reinforcements, but draws out the Lion Inves instead, again, and both Gaim and the other ToQgers arrive to help them. During the fight, the Lion Inves eats some Helheim Fruits from a nearby Crack and enlarges itself into a gigantic size. The ToQgers then form ToQ-Oh CarCarrier Tank and manage to destroy the Inves. With the Rainbow Line about to depart from Zawame City, Kouta makes a request to Right, and using the Rainbow Pass he earned from Narutaki, he asks him to take Mai with them in order to keep her safe.
Children with strong imagination are being kidnapped by the Shadow Creep Bag Shadow at the Dark Station Gakisuteyama Station and taken aboard one of the Shadow Line's evil Kurainer trains. Much to the monster's surprise, amongst the captives is a sleeping young man. The young man awakens and introduces himself as Right, confronting Bag Shadow until the prismatic Rainbow Line and its Ressha trains appear, along with four heroes who call themselves the "ToQgers". The ToQgers fight the monster and his army of Close, but are forced to flee when Right steps into the battle and is knocked out by Bag Shadow. Right later awakens inside the Ressha and recognizes the ToQgers as his childhood friends, Tokatti, Mio, Hikari, and Kagura. He is also greeted by an enigmatic person called the Conductor and his sidekick Ticket who inform him that because of their high imaginations, they were chosen by the Rainbow Line to become the ToQgers in order to stop the Shadow Line's plans to envelop the world in darkness. Soon after, the Kurainer is spotted again and Right is the first to jump into action, not even giving time for his friends to give him his ToQ Changer. When his friends catch up to him, Right uses his imagination to deal a punch to Bag Shadow even without transforming. After rescuing the children, all five ToQgers fight together for the first time. During the battle, Right learns that they can switch their powers and weapons between themselves and they make use of it to confound their enemies, alternating their attacks randomly and defeating all the Close until the Conductor forcibly undoes the switches, claiming that such an ability must be only used in emergencies. The ToQgers then finish the monster with the Renketsu Bazooka, but it later enlarges itself with the power of darkness, prompting the Conductor to switch control of the Ressha temporarily for the ToQgers to form the giant robot ToQ-Oh, using it to destroy Bag Shadow for good with the Fumikiriken Ressha Slash. Back from their first victory, Right and his friends are astonished when Ticket lets slip that the main reason for them being chosen to become the ToQgers is because they are as good as dead.
Still in shock at Ticket's revelation, the ToQgers attempt to inquire about this further when the Rainbow Line's resident attendant, the female robot Wagon, appears with food for them. During their meal, Right and the others realize that they have no personal memories except from those of their childhood together. Soon after, they arrive at one of the Shadow Line's Dark Stations: Kettougahara. After being informed that the Shadow Line's plan is to expand their domains by harnessing the negative feelings of humans until enveloping the whole world, the ToQgers disembark at Kettougahara and soon learn that the residents there are forced to duel each other regularly by the monster Sabre Shadow. Refusing to fight anyone, the ToQgers are attacked by Sabre Shadow and his minions, defending a boy named Yota who also has not dueled as ordered until they reveal that they do not know the station's rules, prompting the monster to retreat for the time being. Yota then reveals that since the neighborhood was overtaken by the Shadow Line, the residents keep fighting each other, behaving as if they are dead. Certain that it must be related to their current condition, Right decides to confront Sabre Shadow. Hikari refuses, claiming that there is nothing for them in helping others if they are really dead. Right disagrees, believing that doing so may also bring some benefit to them as well. The time comes for another duel and instead of having the residents duel each other, ToQ 1gou steps in to duel Sabre Shadow while his friends fight the Close under him. To make things more interesting, Sabre Shadow summons a Kurainer and ToQ 1gou gives chase, mounted on his Red Ressha, assisted by ToQ 4gou driving the Green Ressha. The duel ends with Sabre Shadow defeated, but when the monster enlarges itself, the other ToQgers arrive with their Ressha to form ToQ-Oh. The giant monster then proposes a duel with firearms and the ToQgers agree. However, in the last moment, Sabre Shadow attempts to obtain an unfair advantage by shooting early. The heroes dodge the shot by decoupling and recoupling their Ressha in an instant, giving an opening to finish him. With the station back to its normal state as Nozomigahara, the ToQgers return to the Rainbow Line. They conclude that their lack of memories must be because they are from one of the neighborhoods attacked by the Shadow Line, and are certain that they will return to normal once their station is cleansed of all darkness. The Conductor says that they are right, but Ticket contradicts him, only adding to their confusion
The Conductor and Ticket explain that while the ToQgers must be indeed rescued by the Rainbow Line from one of the train stations conquered by the Shadow Line because of their Imagination, it does not explain why they have lost their memories. Right declares that despite being offered the chance to quit being a ToQger and look for their hometown, he decides to move forward to stop the Shadow Line's plans. Later that night, a worried Kagura meets Right and expresses her will to disembark from the Rainbow Line in order to look for their home, and her friend encourages her, claiming that she must follow her heart just like he is doing. While stopping at Heiwadani Station, Kagura jumps off the train for a while just to miss it when it departs, leaving her behind. Soon after, the Shadow Creep Chain Shadow arrives at one of the Shadow Line's trains and changes Heiwadani Station into Shinotani Dark Station, starting his plan to envelop the entire area in darkness and Kagura decides to confront him by herself, just to be defeated and trapped inside his coffin. The next day, the other ToQgers realize that Kagura is missing and return to Heiwadani Station to look for her. After some children are trapped inside Chain Shadow coffin as well, Right and the others appear to confront him, and ToQ 1gou jumps into the coffin to rescue Kagura, after realizing that she was one of Chain Shadow's captives. However, Kagura refuses assistance and breaks out of the coffin with her own Imagination power, rescuing the children as well. The empowered ToQ 5gou then switches Resshas with ToQ 1gou and overpowers Chain Shadow by herself until Right remembers that Kagura used to go overboard with her Imagination at the risk of her own safety and decides to stop her with the others' help. After falling into a nearby pool, Kagura has a glimpse of her memories from her childhood and remembers that their hometown is somewhere by the sea. Back in the battle, the ToQgers bring down Chain Shadow with the Renketsu Bazooka and later finish him for good with ToQ-Oh after it enlarges itself, managing to use the Red Ressha to break out of Chain Shadow's coffin when he traps them. With their memories of their town in mind, the ToQgers return to the Rainbow Line to continue their quest to stop the Shadow Line, now certain that it will eventually lead them home.
When the ToQgers are informed that they can use their Rainbow Passes as credit cards, they have some time off at a station stop. Meanwhile, General Schwarz, the military leader of the Shadow Line, is interested about the ToQgers' Ressha and wonders if he could learn more about them. Miss Glitta, who is infatuated with him then decides to look for a way to help the general. Once returning from a shopping spree, Tokatti learns that the ToQgers must work to pay for all their expenses with the Rainbow Passes and leaves in a hurry to return all the stuff he bought. Soon after, the next station is taken over by the Shadow Creep Stove Shadow and transformed into the Itaigawa Dark Station. Once the ToQgers assemble to depart, Tokatti realizes that he lost his Rainbow Pass and cannot board the Rainbow Line without it. Mio then stays behind to accompany him while the others rush ahead to stop the monster in his tracks. Once Stove Shadow flees, Mio and Tokatti stay behind again while the rest give chase using the Rainbow Line. Meanwhile, General Schwarz is informed by Glitta, who does not identify herself, about the location of the ToQgers' Ressha and departs there to find them. While crossing a mountain, Tokatti laments about his predicament and wonders if he is dragging down the team because he is not as reliable as the others when Mio trips and falls on a cliff and Tokatti catches her in the nick of time. In that moment, both realize that they lived a similar situation during their childhood and Mio makes use of it to encourage him, as he has already saved her on two different occasions. While cleaning the Ressha, Wagon finds Tokatti's Rainbow Pass and returns it to him. Now reunited with the others, ToQ 2gou and ToQ 3gou exchange their Ressha while the others do the same between themselves to weaken Stove Shadow, before defeating it with the Renketsu Bazooka. When the heroes board ToQ-Oh to fight the enlarged monster, General Schwarz sends two Close each riding a Kurainer that convert themselves into Kurainer Robos. The ToQgers are driven into a corner by the three enemies when Ticket appears to bestow upon them the Shield Ressha which they use to turn the tables and destroy the Kurainer Robos before finishing off Stove Shadow with the Fumikiriken Ressha Slash. After the battle, General Schwarz appears and introduces himself to the ToQgers, declaring that he will return on a later occasion to claim their Ressha and flees
Just as the ToQgers are about to have breakfast, the Rainbow Line makes an abrupt stop at a river, as the tracks are interrupted by the massive darkness emanating from the Dark Station ahead. By using their new support Ressha, the CarCarrier Ressha, Right uses one of its Dash Cars to cross the river, but he goes overboard using the power of his Imagination and is knocked out after hitting his head on a rock. The other ToQgers follow soon after, and while looking for their friend, they come across the Shadow Creep Baketsu Shadow, who consumes all of the people's food in Ōmori Station to collect the darkness from its hungry inhabitants, having transformed it into Harapeko Dark Station. The monster flees after confronting the ToQgers while Right awakens and finds that he was rescued and treated by a group of friends that is camping beside a river. However, the group gets angry at Right for taking their last cup of instant noodles which falls on the ground after they fight him to take it back and drive him away. Tokatti and the others appear soon after, looking for their friend, who returns with fish and bamboo sprouts he has collected to make amends for taking the youngsters' food. Once Baketsu Shadow appears, attracted by the smell of the food, ToQ 1gou decides to punish him for making the people hungry by using the power of the Red, Green, and Yellow Ressha in sequence, before the ToQgers defeat him with the Renketsu Bazooka. When the ToQgers remember that their Ressha are trapped outside the station, the Conductor uses the CarCarrier Ressha to fix the tracks and cross the river, allowing the heroes to form ToQ-Oh and use their new Ressha as ToQ-Oh CarCarrier to finish Baketsu Shadow with the CarCarrier Dash. Once the station returns to normal, the ToQgers continue their travel along the Rainbow Line when the Conductor informs them that there are no other support Ressha in their current possession, but there are others who are missing thanks to the Shadow Line's interference. At that moment, Right remembers that he saw an object resembling a Ressha while he was looking for food and the others argue with him for not saying it beforehand, unaware that General Schwarz has been spying on them after he bugged the Ressha trains.
Upon learning that Right had just seen one of the missing Support Ressha while out in the woods, the team returns to the forest to look for it, as he has forgotten its exact location. However, General Schwarz and his soldiers appear and reveal his intention to claim the lost Ressha for himself, and the ToQgers fight him, just to be easily defeated. Using Tokatti as a hostage, Schwarz coerces Right into leading him to the Ressha's location, while Hikari and the others who managed to flee decide that to save their captive friends, they must retrieve the Ressha first. They remember that when Right went to find some food, he had brought some bamboo sprouts with him, leading them to realize that the Ressha must be hidden inside a bamboo forest. While walking through the forest, Right remembers exactly where the Ressha is located and attempts to mislead General Schwarz with no success. When he decides to dispose of them, the other ToQgers flee, taking the newfound Tank Ressha with them. General Schwarz pursues them with his personal Kurainer, and after disposing of the Close with their ToQ Blasters, ToQ 1gou and 2gou rush after them on the Red Ressha. Powered up by the Tank Ressha's energy supply, the Red Ressha overcomes General Schwarz's Kurainer. He converts it into a Kurainer Robo and the ToQgers form ToQ-Oh to fight it. By equipping the Tank Ressha to form ToQ-Oh Tank, the ToQgers defeat General Schwarz with the ToQ-Oh Tank's Tank Upper. The wounded General manages to survive the battle and return to the Castle Terminal where he is mocked one last time by Right via the bug he laid on the Ressha, before Right destroys it.
To exploit the special properties of Kagura's Imagination, Right and the others decide to have her watch some ninja movies. However, she ends up getting too emotionally involved with it and accidentally breaks Hikari's kendama toy, much to his anger. The next day, the ToQgers arrive at Mukiryokuzaka Dark Station, where the Shadow Creep Hanko Shadow uses his Stamp Gloves to render all citizens devoid of all motivation. Instead of thinking on a plan, Right jumps head on to fight the monster, just to fall under his thrall. Mio and Tokatti are also struck as well, but the Creep retreats after his leg is injured during the fight. Back on the Ressha, Kagura looks to Hikari who is lost in his thoughts and wonders if he is still angry at her for breaking the toy. He realizes this and apologizes to her for being angry over such a simple thing, and for letting her think that he is still mad at her. Having come up with a way to fight Hanko Shadow, ToQ 4gou and 5gou confront the monster once more, and by having ToQ 5gou imagine herself as a solid and impenetrable rock, ToQ 4gou uses the Tunnel Axe to transform her into a huge kendama in order to attack the Shadow Creep while keeping a distance. The plan works, and after deceiving Hanko Shadow by briefly exchanging their Ressha, the two manage to destroy Hanko Shadow's Stamp Gloves and return all of his victims to normal, including the other ToQgers who join the battle and together, they defeat him with the Renketsu Bazooka. Once Hanko Shadow enlarges itself, the ToQgers form ToQ-Oh CarCarrier to defeat it, with Kagura finally putting her newfound ninja skills to use. Back on the Ressha, Kagura thanks Hikari for not being angry at her anymore and she realizes that he cares for his kendama because it must be a gift from someone important to him. However, the ToQgers rest is cut short when the Conductor announces that they have spotted another Support Ressha.
The signal from the lost Diesel Ressha is found, and the ToQgers split up in search for it after the Conductor explains that by being the oldest of the Ressha, it must be too weak to be restored for being separated from the Rainbow Line too long. While Right befriends a group of children, the others regroup to confront the Shadow Creep Bakudan Shadow until ToQ 1gou returns and defeats the enemy single handedly. Once returning to the Rainbow Line, Right reveals to the others that the children had given him a clue to the missing Ressha and returns to look for it, while the others are put in trouble when Bakudan Shadow reappears, planting a bomb on Tokatti and destroying the Ressha's brakes. The Shadow Creep then challenges the ToQgers to catch him and press the button on its head to deactivate the bomb before the Ressha derails and crashes into an oil refinery. Meanwhile, Right finds the Diesel Ressha but finding that it is too weak, cleans it up before attempting to activate it again. After attempting to catch Bakudan Shadow with no success, Hikari comes up with a plan to deceive it by having ToQ 2gou and 4gou exchange their Ressha to have it believe that Tokatti escaped the trap. It is a success and the others take advantage of the confusion to press the bomb and free him for real while Right, having successfully reactivated the Diesel Ressha, returns to assist the Conductor to control the main Ressha. After fixing the brakes and disposing of the Creep, the ToQgers form ToQ-Oh to confront and defeat the enlarged Bakudan Shadow assisted by the Diesel Ressha.
While the Ressha is under maintenance from the previous battle, the group uses the Support Ressha to continue their travels. Once stopping at Kitagojo Station for some rest and relaxation, the ToQgers are attacked by Marionette Shadow and during the fight Mio is protected by an unknown man that catches her attention. After driving the Shadow Creep away, the group returns to the Rainbow Line, but Mio cannot shake the man she met from her mind, particularly after learning that during the commotion, she found his wallet that he dropped. She contacts him, claiming that she wants a "rematch", as she prepares a lunch for an eventual encounter with him. Meanwhile, Marionette Shadow uses his mind control powers to put other men under his control, just like the man who helped Mio, and uses them to seduce other girls just to have them violently rejected in their next encounter, leaving them heartbroken and converting Kitagojo Station into Daisitsuren Dark Station. However, the plan backfires when it attempts to do the same with Mio, who confronts and defeats the monster using the Renketsu Bazooka with the other ToQgers help. With the main Ressha still unavailable, the ToQgers are informed that they can use the Support Ressha to form another robot, Diesel-Oh, to confront the enlarged monster and defeat it with the Diesel-Oh Spin Kick, returning to the main Ressha after its repairs are completed.
While jogging on his own to the next station to build up his endurance, Tokatti meets a boy named Hiroki Fujisawa playing baseball who says he cannot see the Ressha. Tokatti is astonished at this fact, but he is soon alerted by Right that the Shadow Line has just arrived at the next station. By the time Tokatti arrives, the ToQgers are confronting the Shadow Creep Type Shadow who has sent the Ressha off by typing about its departure. Type Shadow imprints Tokatti with the sentence "Tokatti dies at sunset" before taking his leave after ToQ 1gou damages his carriage. While the others pursue Type Shadow in hope that the Shadow Creep's death can save him, Tokatti assures Hiroki that he will be all right as he possesses Imagination, while learning the boy lost his ability to believe after failing to believe in himself. Tokatti eventually learns that the other ToQgers have found Type Shadow and makes his way to his team by the time the sun begins to set. Once transformed, ToQ 2gou switches colors with ToQ 1gou to confuse Type Shadow before he collapses. However, having trained himself before being called, ToQ 2gou is revealed to have used the fight to secretly type an additional line that he will be revived after he dies. The ToQgers then use the Calligraphy version of the Rainbow Rush to destroy Type Shadow. After learning that the Ressha is in space, they resolve to fight the enlarged Shadow Creep with Diesel-Oh to type out a new command to bring the Ressha back to Earth. From there, ToQ-Oh and Diesel-Oh together destroy Type Shadow with a combo attack. As the Ressha departs for its next station, Tokatti sees that Hiroki has regained his imagination as the boy waves good-bye to him.
At the Castle Terminal, confronted by Madame Noir over General Schwarz being sent to retrieve their leader, Barone Nero explains that the darkness he has acquired at the cost of his followers has allowed him to open railway to the Emperor of Darkness. But when General Scwharz returns to the terminal where Nero has assembled a welcoming ceremony, only the Emperor's bodyguard Lamp Shadow emerges with their leader revealed to have left the train midway to find some fun. Meanwhile, the ToQgers are excited to find they are to have a stop at the Yumenohoshi-yūenchimae Station, right in front of an amusement park. While the ToQgers enjoy their day at the amusement park, Right meets a strange young man with balloons who has an obsession for shiny things. But Right eventually realizes there is something wrong about the young man as he finds him odd. Before the young man can introduce himself, two Kurainers arrive with the Shadow Line's leading figures surrounding him. After General Scwharz introduces Barone Nero and Madame Noir to them, the young man introduces himself as the Shadow Line's leader Z, the Emperor of Darkness. The ToQgers transform to fight the Close that have accompanied him before General Scwharz, Madame Noir, and Barone Nero overpower them. But Emperor Z stops his followers from killing the defeated ToQgers as he reveals he does want such such light to be extinguished before realizing the five have been consumed in darkness. Before he can explain, Emperor Z's body begins to fail from being in the light for too long as the Shadow Line falls back, save a fearful Glitta. The ToQgers pursue the Kurainers on the Ressha, only to be halted by three Kurainer Robos which ToQ-Oh and Diesel-Oh destroy with the Double Ressha Super Combination attack. But as the ToQgers are about to leave for the next station, Lamp Shadow acts on Emperor Z's orders to test the ToQgers' light by using an ability that renders Tokatti, Mio, Hikari, and Kagura unable to see the Ressha and seemingly devoid of their Imagination.
As the Yumenohoshi-Yūenchimae Station transforms into the Yaminokage Dark Station, where people are devoid of Imagination, the Ressha is forced to depart while Right remains to search for his friends. Right soon runs into Lamp Shadow and learns that Emperor Z is interested in the ToQgers and that the Shadow Creep has hypnotized Right's friends along with the town's residents as part of an experiment. But as Right finds it hard to get his friends back to normal, he begins to remember more of their childhood home when each mentions a pass they made for their club house. Emperor Z then appears, summoning Lamp Shadow to fight ToQ 1gou. When Right realizes that his friends have never lost their passes, they break Lamp Shadow's hold over themselves. The ToQgers defeat several Close before overwhelming Lamp Shadow with a Fire Extinguishing Rainbow Rush. Elsewhere, Emperor Z meets Glitta, who attempts to kill him out of fear of him, but he falls in love with her light-filled eyes. When Lamp Shadow is revived as a giant, Right combines the Ressha with the Diesel Ressha, Tank Ressha, and CarCarrier Ressha to form Cho-ToQ-Oh, and with this new power they destroy the Shadow Creep. Departing from the restored Yumenohoshi-yūenchimae Station, Right and his friends hope they will regain their full memories before reaching their hometown.
The overuse of Cho-ToQ-Oh during a series of attacks from Kurainer Robos leaves the Ressha in dire need of repairs as it and the Support Ressha need to be reinforced to deal with the stress of the combination. The Conductor also explains that the faint signal of a Support Ressha has been detected at the station they have stopped by. While they search, Mio is bothered by Right's habit of putting food before their mission, prior to finding a Shadow Creep having Close paint the area black. After the Shadow Creep introduces himself as Loupe Shadow, the ToQgers fight the Close before Loupe Shadow runs off. As Right goes off on his own with Kagura following him, Mio is livid over Right's bad habit before she, Tokatti, and Hikari learn that Loupe Shadow's plan is to burn the city with his magnifying glass once its is all painted black. Mio calls Right to help find Loupe Shadow, but he tells her that he has confidence in her to get it done as he focuses on the giant fire extinguisher he and have Kagura found. Though the three ToQgers are too late to stop Loupe Shadow from setting the city on fire, Mio understands Right's trust from a past memory before she, ToQ 2gou, and ToQ 4gou fight Loupe Shadow. By that time, Right activates the Fire Ressha to put out the fires. After being defeated by the three ToQgers, Loupe Shadow enlarges as he sets the nearby forest on fire. The group forms Diesel-Oh and the ToQgers combine it with the Fire Ressha to form Diesel-Oh Fire to put out the fire before finishing Loupe Shadow with the Fire Splash. Later, Mio admits that she was wrong about Right until he arrives with snacks he brought from the city.
While stopping at the Kiraridai Station for half a day, Hikari remains behind to read a book on a detective while Right, Tokatti, Mio, and Kagura find themselves arrested by an incompetent detective named Gonzaemon Toride for a series of crimes that occurred the day before. The Conductor, Ticket, and Wagon fret as Hikari decides to investigate the matter to find the real culprit of the crimes. Hikari's search leads him to the Shadow Creep Sōjiki Shadow who is stealing jewelry and shiny things for Madame Noir. Hikari heads to the Kiraridai Police Station to tell Detective Toride what he has learned, only for the detective to say his explanation is ridiculous, but he clears the ToQgers of all charges when Sōjiki Shadow commits a bank robbery while they are still in custody. Hikari sets up a stake out at a sushi bar soon after, on the hunch that Sōjiki Shadow would steal shiny sushi. Cornering Sōjiki Shadow at his hide out, ToQ 4gou trades colors with ToQ 1gou to weaken the Shadow Creep from the inside before the ToQgers finish him off with a Shiny Sushi Platter version of the Rainbow Rush. When ToQ 1gou finds a Support Ressha among Sōjiki Shadow's haul as the Shadow Creep enlarges, he summons the Police Ressha and combines it with ToQ-Oh to form ToQ-Oh Police to take out a Kurainer and destroy Sōjiki Shadow with its Police Smash attack. After Hikari leaves Detective Toride a call to find Sōjiki Shadow's stash, the ToQgers eat some shiny sushi as the Ressha departs for its next destination.
Aboard the Ressha, the gang learns that Mio has the weakest Imagination amongst the ToQgers before they arrive at the Akumugaoka Dark Station where the Shadow Creep Hammer Shadow is extracting the deepest desires of people and smashing the objects so his victims would fall into their inner darkness. The ToQgers transform to fight his Close accompaniment with ToQ 3gou unable to fight properly due to thinking about her low Imagination. Hammer Shadow then uses his power on Mio to create a childish shumai-like creature named Mikey who overpowers the Shadow Creep. Mikey soon runs off and Mio follows after him. As Mio manages to keep Mikey out of trouble, Hikari explains that Mikey is actually an old toy of Mio's and a mental representation of Mio holding her Imagination back. Though Hikari attempts to hide Mio and Mikey, Hammer Shadow finds them. The ToQgers hold the Shadow Line forces back before Mikey sacrifices himself to save ToQ 3gou from Hammer Shadow's attack. But instead of generating darkness as he intended, Hammer Shadow only allows ToQ 3gou to use the full power of her Imagination to defeat the Shadow Creep. But General Scwharz saves Hammer Shadow and leaves the ToQgers to deal with Kurainer Robos with ToQ-Oh Police and Diesel-Oh Fire. Soon after, Mio tells the ToQgers that she has regained her memories of Mikey and hopes that she will see her doll again when she returns home.
Though Hammer Shadow thanks him for saving his life, General Schwarz hooks him up to his Kurainer. Sometime later, the Ressha arrives at a Dark Station where the ToQgers find children willingly entering General Schwarz's Kurainer before jumping into the train. Right, Mio, and Hikari enter the train, and become enthralled by its power, keeping them in a restaurant while the children play around in a kid's museum. Kagura and Tokatti are separated from the others by a girl named Aoi who believes that her little brother Kakeru has been kidnapped by the train's owner. It is at this time that they discover that it is a Shadow Line plot to have children unusually happy by giving them their deepest desire. Tokatti and Kagura are found by General Schwarz as he evicts them and Aoi from his train before beginning the next phase of his plan. Kagura and Tokatti pursue the Kurainer in the Police Ressha, and Aoi uses her Imagination to help ToQ 5gou find the children who are about to their dreams smashed by Hammer Shadow, just as General Schwarz reveals his plans to her. ToQ 5gou is forced to fight the him and Close on her own before she uses her Imagination to snap Right, Mio, and Hikari out of their trance. As the three freed ToQgers hold off General Schwarz, ToQ 5gou fights Hammer Shadow before the Police Ressha stops the Kurainer in its tracks. The ToQgers get the children to safety before defeating Hammer Shadow with a One Million Paper Fan Smack variation of the Rainbow Rush and then destroy the Shadow Creep with Cho-ToQ-Oh after disarming him. As General Schwarz falls back with the darkness he gathered, the Ressha heads off to its next location while the Conductor and Ticket receive a gift from their superiors: the Build Ressha and the AppliChanger.
The ToQgers form ToQ-Oh to deal with a Kurainer Robo remote controlled by Emperor Z, summoning Diesel-Oh to defeat their opponent. Soon after, the ToQgers learn from the Conductor and Ticket that they have obtained the Build Ressha and the AppliChanger in preparation for a sixth ToQger. Though the ToQgers believe their sixth member is a moody man walking in the rain towards them, the Conductor explains that he is a railway worker for the Rainbow Line who is a former Shadow Line member named Zaramu, before he switched sides to atone for his misdeeds. While the others believe the Conductor's explanation, Right intends to have Zaramu join them anyway. He leaves the Ressha to meet the railway worker before he is attacked by General Schwarz, who was an old friend of Zaramu's. This forces Zaramu to assume his true form to get Right to safety while General Schwarz goes after the other ToQgers on the notion that they know where Zaramu is hiding. While tending to Right's wound, believing his power to project endless rain is evil, Zaramu explains that he resolved to protect the light upon seeing a rainbow, and as atonement he would pay with his life. When Right is contacted by Wagon of his teammates being attacked, Right asks Zaramu to fight with him as a ToQger. Given the AppliChanger by Right before facing General Schwarz, Zaramu transforms into the sixth ToQger: ToQ 6gou. Believing he has found a place worth dying, his rain cloud dissipates during his transformation. ToQ 6gou battles General Schwarz with the duel ending with General Schwarz escaping while Zaramu collapses. But despite believing he has died, Zaramu is told he is still alive as he gives the AppliChanger back to Right before walking off.[
At Castle Terminal, Emperor Z confronts General Schwarz about Zaramu with an interest in the former Shadow Line member. However, he reveals he knows he is acting behind his back, and warns General Schwarz to cease unauthorized activities. On the Ressha, though he has given back the AppliChanger and his powers have finally faded away, the topic of letting Zaramu join the ToQgers is brought into question before they arrive at Henzutsū Dark Station where the Shadow Creep Ring Shadow is torturing people with his headbands. The ToQgers find Zaramu with Ring Shadow and see him get a headband, but he is immune to Ring Shadow's ability as he has long since discarded his name. However, Emperor Z arrives and revives Zaramu's nature as a creature of darkness as he and Right are both subjected to Ring Shadow's power. Emperor Z tells Zaramu to meet him again to continue discussion with Right as incentive. Though Hikari refuses to trust him completely, Zaramu promises to save Right and find a place where he can die. Back on the Ressha, the gang debates on what to do before Hikari gets an idea. Later, Zaramu arrives to where Emperor Z is waiting as he proceeds to torture Zaramu to find how he has opened his heart to the light. After Right tricks Ring Shadow to remove the headband, the other ToQgers arrive as they use the Rainbow Rush to give Zaramu a new name: Akira Nijino. Emperor Z gets his answer upon seeing the rainbow, and, dejected by his inability to be accepted by the light, leaves Ring Shadow to deal with the ToQgers with Akira allowed to fight alongside them as ToQ 6gou. After being defeated by ToQ 6gou, Ring Shadow overpowers ToQ-Oh before ToQ 6gou summons the Drill Ressha which combines with ToQ-Oh to form ToQ-Oh Drill to destroy the Shadow Creep. With everything back to normal, save for his ideal, Akira turns down the ToQgers' offer to join them aboard the Ressha as he walks off to protect the Rainbow Line in his own way.
While working on the railway, Akira acquires a new Ressha from the Rainbow Line and proceeds to master driving it. Learning of Akira's sudden disappearance, the ToQgers attempt to find him. Tokatti finds him first as he tries to befriend Akira one-on-one. But as Tokatti sees that Akira has completely taken the new Ressha's cockpit apart to set in a pulley system, they learn the Ressha is under attack by a Kurainer Robo under the control of Fence Shadow. Though the two attempt to help, the Kurainer Robo forcefully equips the Drill Ressha and buries the Ressha. Akira and Tokatti are forced to escape, with the latter remembering that he was a transfer student the others befriended. Akira now understands his resolve to befriend him, while telling him that they can best help the others with the Build Ressha. After finishing the remodeling, ToQ 6gou uses the Build Ressha to free the Ressha and save its occupants from suffocation. After the ToQgers defeat Fence Shadow with a Rock Slide variation of the Rainbow Rush, the ToQgers enter the Build Ressha as it reconfigures into BuildDai-Oh. Reclaiming the Drill Ressha, BuildDai-Oh becomes BuildDai-Oh Drill and destroys Fence Shadow with its Shovel Drill Double Crash attack. Upon realizing he was forcing a friendship with Akira, Tokatti sees Akira's resolve to help him and his friends reach their hometown as the ToQgers go to the Ressha to enjoy some bento.
On the Ressha, with Ticket utterly livid over what Akira has done to the Build Ressha, the topic of Akira never smiling comes up as they attempt to get him to laugh. But after Akira explains that he will smile once he has died, the ToQgers are alerted to the presence of Ōwarai Dark Station where those who laugh are sent flying through the power of the Shadow Creep Jack-in-the-Box Shadow. After fighting the Close, the main ToQgers are taken out by their laughter while ToQ 6gou drives Jack-in-the-Box Shadow off. On the Ressha, the main ToQgers undergo strange comedy training to give Jack-in-the-Box Shadow a taste of his own medicine. Though they think they are ready, the ToQgers' training is shown to be fruitless as Akira arrives, playing a recorder instead of his missing harmonica that makes all parties laugh. ToQ 6gou then proceeds to defeat the Close with the other ToQgers' assistance while an upset ToQ 1gou sits the fight out. After ToQ 6gou defeats Jack-in-the-Box Shadow, he summons the Build Ressha while the others form ToQ-Oh and Diesel-Oh. But as ToQ 6gou forms BuildDai-Oh, he begins to laugh uncontrollably throughout the fight until the Ressha combinations destroy Jack-in-the-Box Shadow and his Kurainer support. It is at this time that they discover that Akira is being tickled by a kitten he borrowed from a little girl who was unable to keep it, which the main ToQgers notice has made him smile. When Akira is forced to give the cat back to the little girl, regaining his harmonica in the process, he sobs over the loss before reverting to his usual moody self. Meanwhile, at Castle Terminal, Madame Noir has made the finishing touches on Miss Glitta's wedding dress, with Barone Nero feeling that Noir has an ulterior motive through her daughter
At Castle Terminal, Miss Glitta admits to Madame Noir that she does not want to marry Emperor Z before her mother tells her the true purpose of the wedding. More terrified as a result, Miss Glitta confides in General Schwarz that they must flee together while Barone Nero's suspicions of a farce wedding are confirmed. On the Ressha, the ToQgers get ready for summer but Mio is suddenly struck by glimpses of a sad memory of a summer festival. A Kurainer passes by with an invitation to Emperor Z's wedding, which the ToQgers investigate. However, it turns out to be a trap set by Miss Glitta to have her Shadow Creep Sabão Shadow use his ability to switch minds with Mio, while Right, Tokatti, and Hikari also fall under the Shadow Creep's spell. From there, Miss Glitta escapes in Mio's body while Madame Noir arrives to bring back who she believes is her daughter to Castle Terminal. Luckily, ToQ 6gou's interference allows Kagura to get Mio-Glitta to safety before they find Miss Glitta and learn her reasons for wanting to escape. However, as she and Mio begin to weaken, Miss Glitta realizes she was unaware of the fatal side effect of Sabão Shadow's power. Madame Noir learns the truth of the situation and makes a temporary truce with the ToQgers while holding off Barone Nero. Luckily, the male ToQgers manage to defeat Sabão Shadow to undo his spell, allowing Miss Glitta to run off. After Mio promises to tell Kagura what is worrying her later, they join the other ToQgers in the Police Ressha and Fire Ressha that Diesel-Oh equips so it and BuildDai-Oh can destroy Sabão Shadow. After sunset, Miss Glitta arrives to the place she and General Schwarz planned to elope, only for her beloved to have revealed the location to Emperor Z so he can retrieve his bride-to-be.
After being found by Emperor Z, Miss Glitta is forced to return to Castle Terminal out of fear for General Schwarz's well-being. As the final preparations for the wedding are underway, Barone Nero attempts to warn Emperor Z of Madame Noir's treachery before being knocked back by the Emperor's power for his attempt on Miss Glitta's life. Soon after, General Schwarz reveals he has abandoned Miss Glitta for his own ambition, and the wedding ceremony commences. Madame Noir makes her move and has Miss Glitta devour Emperor Z to take his power for her own. With Emperor Z gone, General Schwarz can now attack the Rainbow Line without restraint. On the Ressha, Mio reveals she has recovered an important memory of their hometown that they were going somewhere during a summer festival. This causes Right to remember that they were going to their secret base to see the stars. They now know that they might find their hometown by finding seaside places with star-gazing festivals. During the search, Mio admits that her recovered memory was not all happy before the ToQgers are alerted to General Schwarz's appearance. Joined by Akira, the six ToQgers fight the Shadow Line forces while the Close hijack the Ressha and Miss Glitta appears in her new Empress of Darkness state. After Empress Glitta tells him to stop playing around, General Schwarz pilots ToQ-Oh to battle Diesel-Oh and BuildDai-Oh. Things become worse when Empress Glitta joins the fray in the Imperial Kurainer Robo, overpowering the Ressha combinations while the main ToQgers begin to remember the night of the festival ended with their town swallowed by darkness.
The ToQgers barely escape the Imperial Kurainer Robo's Darkness Fall attack, but the Support Ressha are damaged. As Akira proceeds to make repairs, the main ToQgers are attracted to the Sakuma Shrine festival where the memories of their hometown's festival come back to them along with their families. The main ToQgers are then alerted to General Schwarz's appearance and resolve to keep him from attacking the festival. With ToQ 1gou holding back General Schwarz, the other ToQgers manage to reclaim the Ressha. Refusing to give up, General Schwarz summons his personal Kurainer as Cho-ToQ-Oh and BuildDai-Oh are forced to fight him. At that time, upon seeing General Schwarz's handkerchief, Miss Glitta regains a bit of her former self and runs off to aid him in the Imperial Kurainer. While once more subjected to the Darkness Fall, the main ToQgers remember how they were brave at the end of their hometown along with recovering the name of their home: Subarugahama. This mindset allows the ToQgers to have Cho-ToQ-Oh combine with the Build Ressha to form Cho-Cho-ToQ-Dai-Oh. Miss Glitta uses the Imperial Kurainer Robo to shield General Schwarz's Kurainer from the Cho-Cho-ToQ-Dai-Oh Imagination Express attack. Both Kurainers are destroyed, and Miss Glitta ends up mortally wounded and back to her usual self. Upon seeing Miss Glitta has forgiven him, General Schwarz is about to return her feelings when she is consumed from the inside by a monstrous being revealed to be Emperor Z. He reveals he has acquired Miss Glitta's inner light, and in his new form Emperor Z sends General Schwarz falling into the river while revealing he intends to obtain the main ToQgers' light, the first light he saw, when they meet next time.
Right and the others search the records for their hometown of Subarugahama, ignoring the pleas of Wagon, only to come up empty as if the town never existed. Ticket reveals that this is the result of being completely enveloped by the Shadow Line's darkness; the town around a Dark Station separated from the Rainbow Line and made a part of the Shadow Line as a Shadow Town. However, Akira reveals that there is a way onto the Shadow Line as he takes them to a junction line linking the Rainbow Line and Shadow Line railways and loans them his Drill Ressha, as it was previously a Kurainer. The group arrives in the Shadow Town of Ugokenai, where they encounter Ugokenai's Keeper Rook. They prepare to fight him, but they find that they are unable to maintain their transformation for more than 30 seconds at a time, forcing them into hiding. Eventually, the group comes up with a plan to let one of them deal with Keeper Rook while the others hold off the Close, before only Right is left to face the Keeper while using Transfer Changes to prolong his transformation and a Shogi variation of the Rainbow Rush to finish Keeper Rook off. Outside the Shadow Line, Akira is confronted by Barone Nero until Ugokenai and an enlarged Rook manifest back into normal space. Keeper Rook then proceeds to absorb Close from his spear to increase his size to overpower Cho-ToQ-Oh and BuildDai-Oh before they combine into Cho-Cho-ToQ-Dai-Oh to destroy Keeper Rook's spear and then Keeper Rook himself. With the town restored, the main ToQgers decide to save the towns taken by the Shadow Line as Akira leaves to find the next junction point.
After overexerting himself while training with Right and Hikari for the next Shadow Town, Tokatti falls asleep on the couch while Mio treats his wounds before the ToQgers arrive to the Otogi Dark Station where they encounter fairy tale characters brought to life by Pinspo Shadow as part of Emperor Z's scheme to acquire the light from the fictional characters. However, Emperor Z is disappointed by the fairy tale characters' lack of light as Barone Nero offers to take over and orders Pinspo Shadow to destroy them in hopes it would stir up inner darkness. While ToQ 6gou holds off Barone Nero and Pinspo Shadow, the other ToQgers spirit the fairy tale characters away. ToQ 2gou remains behind before he is saved by a figure he recognizes as Ryo Knight; Tokatti explains to Mio and Kagura that Ryo Knight is a super hero he made up as a child. The Shadow Line forces eventually find them as the ToQgers and Ryo Knight fight them side-by-side. But with Ryo Knight's encouragement, ToQ 2gou decides to use the training he and the others did to drive Barone Nero back before the ToQgers use a Fairy Tale Collection variation of the Rainbow Rush to finish Pinspo Shadow off. When Pinspo Shadow is revived, ToQ-Oh and BuildDai-Oh are formed to fight the enlarged Shadow Creep. BuildDai-Oh equips the Tank Ressha to become BuildDai-Oh Tank while ToQ-Oh equips the Build Ressha to become ToQ-Oh Build to finish their opponent off. Later, Tokatti explains to Mio that Ryo Knight is modeled after his older brother and the two have moment before their friends start the fireworks celebration. Elsewhere, as Madame Noir learns that Miss Glitta is still alive within Emperor Z, General Schwarz is revealed to have survived his fall into the river as he finds his Kurainer still intact.
At their next stop in the town of Tsukikawa, the ToQgers are ambushed by a group of Close the moment they step out of the Ressha, but are perplexed that they cannot find a Shadow Creep once they manage to subdue the Close. While the other ToQgers are searching for a dark presence, Kagura gets herself lost and follows Akira to the Hironoyu Sentō bathhouse where the owner is dealing with the loan shark Teruo Inzai, who is threatening to tear the establishment down if he is not paid by the following day. Joined by the other ToQgers, Akira and Kagura are allowed to have a bath in the establishment which inspires the group to help out. The ToQgers try their best to advertise the bathhouse, but Akira decides to add a discount to their advertisement, which dismays the group. However, the next day, just as Inzai is to repo the bathhouse, it is revealed that Kagura and Akira have used the Build Ressha to lift the whole building off of its foundation, revealing a mass of darkness beneath it. Inzai is forced to reveal himself as the Shadow Creep Coin Shadow, and explains his intention to force the Hironoyu Sentō out of business to build a new Shadow Line Terminal in its place. The ToQgers transform and fight Coin Shadow before ToQ 5gou and ToQ 6gou knock the Shadow Creep into the mass of darkness. Coin Shadow enlarges from absorbing the darkness, leading the ToQgers to use ToQ-Oh and Diesel-Oh to battle, before combining to form Cho-ToQ-Oh Fire to destroy Coin Shadow as he gets dizzy from the darkness. After putting the bathhouse back in place, the owner grants Kagura and Akira's request for one last bath before they resume their journey.
The group finds Right acting intense for some reason just as Akira calls them to say that he has found a junction to a Shadow Town. The Conductor and Ticket then present the group with the Hyper Ressha, which requires a large amount of Imagination and thus is entrusted to Right. Upon arriving in the Shadow Town of Samayoi, the ToQgers are ambushed by Keeper Bishop. However, ToQ 1gou is unable to use the Hyper Ressha as Right has come down with a fever. ToQ 4gou is unable to hold off Keeper Bishop, ToQ 6gou arrives to cover the ToQgers' escape before the group ends up being separated by the spell cast on Samayoi. With Right feeling he should have been able to use the Hyper Ressha, Akira tells him to stay put as he uses his harmonica to guide the others to him so they can distract Keeper Bishop. The other ToQgers find Akira after assuming his Zaramu form before they are confronted by Emperor Z and the head of the Keepers, Marchioness Mork, who wants Emperor Z to see his weakness in seeking out light as she orders Keeper Bishop not to hold back on their account. Luckily, after realizing that true Imagination is to be free and have fun, Right arrives and uses the Hyper Ressha to become Hyper ToQ 1gou to overpower Keeper Bishop. Emperor Z then joins the fray, his darkness clashing with Right's light, before the two engage in physical combat. However, Hyper ToQ 1gou obtains the Daikaiten Cannon and fires the Hyper Last Train Crash at Emperor Z, but Keeper Bishop takes the deathblow. As Marchioness Mork takes Emperor Z away, Keeper Bishop enlarges with ToQ-Oh and BuildDai-Oh formed to fight him. They soon form Cho-Cho-ToQ-Dai-Oh to destroy their opponent. As the town returns to normal, the other ToQgers end up getting sick, forcing Right to take care of them.
Marchioness Mork has decided to move into Castle Terminal as she orders Madame Noir to gather darkness. Forced to comply, Madame Noir uses her power to drive people into a rampage before Akira finds her. While the main ToQgers remove Madame Noir's feathers from the rampagers' heads, she sends a feather barrage ToQ 6gou's way. He accidentally sends one of her feathers onto ToQ 1gou's head, leaving his teammates unable to fight their friend. Luckily, ToQ 6gou is able to fight without restraint before the other main ToQgers grab him and escape. Tokatti and Hikari work together as they search for Right, when Tokatti's feelings for Mio are brought up. Before Tokatti can explain himself, they are alerted that Right is at the park, just as Hikari admits that both Tokatti and Mio are annoying. Once regrouped, the ToQgers use memories of Right wronging them to knock him out to get the feather off of his head. Hyper ToQ 1gou then overpowers Noir as she escapes on a Kurainer with BuildDai-Oh dealing with two Kurainer Robos covering her. However, Hyper ToQ 1gou allows his team to join him to firing the Hyper 5 Connection Crash attack to destroy the enemy robots. As the gang enjoys Mio's homemade pudding, with Tokatti asking Hikari to keep his feelings for Mio a secret, General Schwarz has finished making the repairs on his Kurainer.
Having survived Emperor Z's attack and repaired his Kurainer, General Schwarz sees he needs the Drill Ressha to enact his revenge. General Schwarz finds ToQ 6gou as he is attacked by Barone Nero's top subordinate Bottle Shadow, fighting the Shadow Creep before the other ToQgers' arrival forces Bottle Shadow off. Talking to Akira in private, General Schwarz express his need to defeat Emperor Z by any means necessary as he requests an alliance with the ToQgers. Though the others think it is unwise to befriend him, Right decides to see General Schwarz's resolve and accepts after the others see it to avenge Miss Glitta. Soon after, when Bottle Shadow returns, the ToQgers enact General Schwarz's strategy before the Shadow Creep reveals an additional attack that disarms ToQ 6gou. Having known this fact, General Schwarz reveals his true colors as he takes the Drill Ressha as ToQ 1gou furiously fights him. After the item is knocked way from ToQ 1gou, ToQ 4gou uses the Hyper Ressha to become Hyper ToQ 4gou as he and use the other ToQgers Hyper 4 Connection Crash to destroy Bottle Shadow. General Schwarz then summons his Kurainer and forms Kurainer Drill to fight Diesel-Oh before escaping while ToQ-Oh destroys the enlarged Bottle Shadow. Later at the Ressha, Right apologizes as he lost their only means to enter Shadow Towns before Akira assures him and the others that they will get it back.
After waking up from a dream, Kagura regains a memory that September 28 is Mio's birthday and she tells the others that she wants to throw Mio a surprise party. Kagura proceeds to bake a cake, but the others find it tastes plain. She decides to go to the Kazu Bakery to learn how to properly bake a cake, and convinces the head baker Airi to train her. Elsewhere, the male members cover for Kagura's absence, but must now deal with the Shadow Creep Wig Shadow before he places his Bird Nest Wigs that will kill them if they are unable to care for the chicks on their heads. Though Kagura is worried for them, Hikari and Tokatti convince her to focus on her baking lesson. After finishing her cake while Airi tells her what is truly important about baking a cake, Kagura runs into Wig Shadow but the cake ruined by the Shadow Creep's attack. The other ToQgers arrive yet are unable to fight, forcing ToQ 5gou to fight Wig Shadow on her own before the Shadow Creep gains the upper hand. Things seem hopeless until the ToQgers' shadow chicks grow up into shadow chickens that attack Wig Shadow before running off. Though Wig Shadow attempts to sneak off, ToQ 5gou refuses to let him escape as she uses the Hyper Ressha to change into Hyper ToQ 5gou, but ToQ 3gou is caught in the transformation and two are joined by the Hyper Ressha armor. ToQ 5gou explains that appearances are not everything as the female Hyper ToQgers double team Wig Shadow before defeating him with the Hyper 5 Connection Crash and then use Cho-Cho-ToQ-Dai-Oh to destroy him. Later, Mio's surprise birthday commences without a hitch.
Instead of going to Uragoeshi Station, the ToQgers are informed that the Ressha will have a rare visit to the Hyper Ressha Terminal for a cleaning of lingering darkness. As Wagon and the ToQgers decide to look around the terminal to wait out he cleaning, the Conductor and Ticket meet with the Rainbow Line President over what they learn to be the President's concern about the ToQgers themselves. Elsewhere, Marchioness Mork learns of the Hyper Ressha Terminal's appearance and she orders Barone Nero to provide a distraction while she and Emperor Z take the opportunity to take over the terminal. However, as the ToQgers arrive at the corrupted Uragaeshi Dark Station via bus to fight Nero and the Dining Set Brothers, the Imperial Kurainer is attacked by General Schwarz, with a fight between himself and Marchioness Mork resulting in Madame Noir joining the feud to bide her time. Seeing the smoke caused from the fight, Right reaches the Shadow Line members' fight and saves a girl who was almost hit by Emperor Z's attack. Right then sees no more reason to hold back against Emperor Z. Their duel rages on into an all-out brawl until Emperor Z suddenly kneels over. Marchioness Mork spirits him away and General Schwarz learns that Miss Glitta is still alive within the Emperor's body. Meanwhile, as ToQ 6gou battles Barone Nero, the other ToQgers manage to catch the Dining Set Brothers off guard, with Table Shadow sacrificing Chair Shadow to avoid the deathblow. With Hyper ToQ 1gou joining them, the ToQgers learn the Ressha cleaning is complete as they form Cho-ToQ-Oh to eliminate Chair Shadow before destroying him. But despite Right having his friends promise to stop the Shadow Line, the Conductor and Ticket tell them that the ToQgers have been disbanded.
After the President of the Rainbow Line disbands the ToQgers, Right feels he is wrong and decides to talk to him directly for answers. But on the way, the ToQgers see themselves as children in their reflections. Going back to the Ressha in confusion, the ToQgers learn that they are still children whose Imagination had saved them from the darkness consuming Subarugahama. Furthermore, with the President using their Imagination to give them adult ages to fight the Shadow Line, the disbandment is revealed to be for their own good as the darkness would eventually make them adults forever. While ToQ 6gou holds off the remaining Dining Set Brothers as they make their way towards the Hyper Ressha Terminal, Right resolves to continue fighting even if it means no being able to return to his original age. Eventually, the other ToQgers follow suit and save ToQ 1gou and ToQ 6gou. The six ToQgers overwhelm the Dining Set Brothers before using a Hyper 5 Connection Crash and Yudo Breaker combination attack to defeat the Shadow Creeps with Cho-ToQ-Oh Police Fire and BuildDai-Oh formed to fight them. But when the Dining Set Brothers gain the upper hand, the President gives the ToQgers permission to use the Hyper Ressha with Hyper ToQ 1gou transforming it into Hyper Ressha Tei-Oh to take out Table Shadow after Chair Shadow is destroyed. While the Conductor and the others deliberate the President's reasons and the path their friends have chosen, the ToQgers finally remember their full names and sing "Twinkle Twinkle Little Star" while looking at the night sky, just as they did when they were children. At Castle Terminal, still weakened from from his previous attempt to reach the Hyper Terminal Terminal, Emperor Z sings the same song as well.
With their memories back, Conductor and Ticket noting their maturity, the ToQgers train with Right and Hikari after both remember that Right's grandfather taught the two of them karate. Before Right and Hikari can spar, they and the other ToQgers are alerted that a neighboring station has been taken by the Shadow Line. The ToQgers arrive to the Chūdoku Dark Station where they are attacked by martial artists, until their dojo leader stops them upon seeing Right and Hikari's skills. The dojo master explains that the Shadow Creep Chūshaki Shadow has placed poison injecting bracelets on everyone and that they have until sunset to defeat him by going through a gauntlet of battles in a building. Before the ToQgers enter the building, Chūshaki Shadow forces them to play by his rules by fighting without their powers while wearing Bracelet Syringes, as well. The ToQgers regroup back the Ressha, and Hikari forms a plan involving him and Right as a diversion while the others are on standby in the Dash Cars. Once back at the building, telling Right of how he lost their sparing match in the past and actually had their sensei's support, Hikari tells him to consider their act a game before they and the dojo master go through the gauntlet. Once Right and Hikari reach the top, the other ToQgers make their move before the "Chūshaki Shadow" they have been fighting is revealed to be a decoy. However, feigning a fight between himself and Right as the sun begins to set, Hikari reveals that the dojo master is actually Chūshaki Shadow, who assumed the dojo master's form after kidnapping him. Hikari and Right strike the Shadow Creep's syringe, ending his control over the town. The ToQgers then transform, with Hyper ToQ 1gou knocking Chūshaki Shadow out of the top floor window before following him to the ground floor, destroying the Shadow Creep during their descent. When the revived Chūshaki Shadow enlarges and renders Cho-Cho-ToQ-Dai-Oh powerless, Hyper ToQ 1gou uses Hyper Ressha Tei-Oh to destroy the Shadow Creep. Soon after the Ressha leaves, Hikari reveals that he used the gauntlet to test which of them is the better fighter by having defeated more Close, leaving Right to mope over his loss.
On the Ressha, the topic of an ideal boyfriend is brought up, much to Mio's dismay, but the group's good moods are soured when the Ressha has to head back to the previous Tsukiai Station as it has just been taken over by the Shadow Creep Billiard Shadow. Though she and the team drive Billiard Shadow off, Mio finds herself being pursued by a nerdy romantic named Yoshio Omotesando whom she saved from the Shadow Creep. To avoid Yoshio's affections, Mio lies that Akira is her boyfriend. After Mio attempts to get the Conductor to leave the station and be away from her stalker, Wagon suggests for her and Akira to go on a date, with Hikari telling Right that they should let Tokatti oversee the matter. As ToQ 1gou and ToQ 4gou hold off Billiard Shadow, Mio's date goes horribly due to her nervousness as Wagon has Akira use a last resort she gave him: a wedding ring. This causes Tokatti to overreact as Yoshio insists Mio and Akira to kiss to prove to him that they are in love. Though Akira agrees, he misunderstands Yoshio's words and kisses him instead. Just as everyone is shocked by the turn of events, ToQ 1gou and 4gou are knocked into the group from their fight against Billiard Shadow. Though ToQ 3gou and 6gou lead the attack against Billiard Shadow, but ToQ 2gou ends up facing the Shadow Creep on his own as Hyper ToQ 2gou to take out his frustrations before destroying the Shadow Creep with Hyper Ressha Tei-Oh. Although the ToQgers have succeeded in their task of saving Tsukiai Station, Akira ends up being stalked by Yoshio before the Ressha leaves for the next station.
With the Hyper Ressha Terminal occupied by the Shadow Line forces, the President decides to authorize the ToQgers to use all thirteen of their Ressha together to get it back, but first, they must get the Drill Ressha back from General Schwarz.
Hikari finds their old homeroom teacher is still alive, as she had left town to go to university, and he leads the others in protecting her from Mannenhitsu Shadow's failure attack.
In the next Shadow Town, Keeper Knight forces the ToQgers to take a quiz, leaving Tokatti unsure of how he should answer due to being asked about Mio.
The Ressha stops at a station under the power of Film Shadow, leading the ToQgers to help produce a rival movie to defeat the monster.
With Christmas approaching, Imagination begins to run wild which makes the Shadow Line weaker. Right, however, realizes Akira is missing, while General Schwarz plans an offensive against Emperor Z and various defeated Shadow Creeps suddenly revive one after another.
Akira, as Zaram, joins General Schwarz in his assault on Castle Terminal, but someone else gets the AppliChanger and attacks the ToQgers as ToQ 6gou.
Subarugahama is discovered to be kept under the Castle Terminal, leading Right and the others to attempt an assault on the castle in order to free their hometown.
Right wants to make an assault on Castle Terminal to free Subarugahama, but Akira and Mio realize that he is being too headstrong. Wagon reveals that she can deliver a letter for them, but it must contain their true feelings of things and Tokatti is not ready to commit to that.
When Dollhouse Shadow attacks the ToQgers, Hikari and Kagura are trapped inside its dollhouse which will burn and kill them if they cannot find a way out or if the others cannot stop it.
Miss Glitta helps the ToQgers reach Castle Terminal to save their hometown, but the Shadow Line's forces stand in their way as Emperor Z confronts Right over their connection.
The ToQgers have managed to free Subarugahama, and Tokatti has figured out a way that they can become children again, but Right is not sure what to do after he transformed into the Dark ToQ 1gou in his fight with Emperor Z.
Akira stops Right from taking on Emperor Z as Dark ToQ 1gou on his own for he fears for his safety and promises to fight by Right's side. Elsewhere, Tokatti and the others, as children once more, go to their secret base and find something completely unexpected.
Having regained their memories, Tokatti, Hikari, Mio, and Kagura find Right, and, with Akira's help, dispel the darkness within their friend before they make a final stand to stop Emperor Z and the Shadow Line from shrouding the world in eternal darkness.