After Pancham and Chespin get into a fight, Ash, Serena, Clemont, and Bonnie meet Nini, a Pokémon Performer preparing for the Pokémon Showcase. Serena becomes inspired to add performances to her battle style as well and has to use it quickly when Team Rocket kidnaps Chespin, Fennekin, Pancham, and Nini's Pokémon: Smoochum and Farfetch'd.
The episode begins with Ash and his friends taking an excursion to the Muraille Coast before heading out to the Cyllage City for Ash's Gym battle with Grant. After lunch, Ash decides that they should work on their strategy for countering Grant's Rock Tomb, and Pikachu, Froakie, and Fletchling are all ready to train. However, Serena decides that they should do some fishing since they're at the beach and doing too much training will stress Ash out.
Ash with the intention of helping a Snubbull disrupts a play rehearsal. This sends its star Gallade out of commission. Ash's Hawlucha and the Pokemon Theatre Director Carl's shiny Hawlucha must work together to get the play back on track while trying to deal with Team Rocket.
Ash and his friends meet up with Sanpei and his Greninja who comes to them for help in dealing with another Ninja Trainer. They help Sanpei out, but something happens to Ash's Froakie.
When Serena's mother Grace visits the group on their journey and learns of her daughter's new goal of becoming a Pokémon Performer, Grace wonders if her daughter is truly dedicated to her goals and challenges her to a Skiddo race to prove her determination.
Clemont and James must work together to save their friends from the evil Malamar that they last encountered when it controlled Officer Jenny and made her assume the role of "Madame X."
Ash and his friends encounter an extremely timid but friendly Goomy, which finds itself in a slippery situation when Team Rocket sets their eyes on Pikachu.
Team Rocket kidnaps Goomy, but Dedenne manages to track them down to save its new friend.
Ash and his friends team up with the Coumarine City's Gym Leader to stop Team Rocket from stealing a Vanillite, which incurred the anger of its fellow Pokémon, Vanillish and Vanilluxe.
Ash challenges Ramos for the Plant Badge and gets backed into a corner by his powerful Grass-type Pokémon.
Coumarine City holds an annual festival to celebrate the bond between trainer and Pokémon. However, when Ash has trouble deciding on a present for his Pokémon, Serena helps inspire him on their shopping trip.
The day of the Coumarine City Showcase arrives, and the group reunites with Shauna. Serena makes a step towards her dream but quickly learns that first times can be tough.
The gang encounters a Grumpig in the badlands, which uses its superior strength to dominate the Spoink in the area's oasis. When they end up getting captured by Team Rocket, Goomy steps up to the plate to defend its friends.
Clemont and the others arrive at the Kalos Power Plant and discover Team Rocket is manipulating the Electric Pokémon in the area.
Jessie and Wobbuffet are separated from James and Meowth after being sent flying by Pikachu's Thunderbolt. A doctor named White then saves Jessie from drowning in a river, and she seems to fall in love with him.
Pancham and Fennekin start fighting while training with Serena for their next Pokémon Showcase, and she inadvertently yells at them. However, a person calling herself Ariana offers to teach Serena a thing or two about performance battling.
Ash reunites with Tierno and decides to prepare for his Lumiose Gym match by challenging his friend to a double battle. When Team Rocket attacks with their new mecha, Sliggoo summons a new power.
Ash and the others arrive in Lumiose City and reunite with Clemont and discover that a mad scientist, Belmondo, had invented a Dark Clembot robot, which he had been using to commit crimes all over the city. Teaming up with Officer Jenny, the gang try to get to the bottom of the occurrence and clear Clembot's name.
Ash and Clemont finally begin their promised Gym battle at the Prism Tower and show off their strategies for countering the other's unique battle style.
Ash and the others visit Professor Sycamore to observe his experiment with a Key Stone and a Mega Stone. However, when Team Rocket crashes the experiment and gets away with the Mega Stone and Garchomp.
Ash and his friends meet a man named Keanan while on their way to Laverre City and they learn about Goodra's history. At the same time, they encounter a Florges and its army of Bug-type Pokémon who had once terrorized Goodra's home in the wetlands.
Team Rocket deceives Florges into an alliance and then double crosses it when they attempt to drain all of the Spring water of the wetlands.
After an ambush by Team Rocket and a group of Pangoro, the gang gets separated from each other and Bonnie finds herself lost in the forest with Meowth.
Ash and his friends find themselves lost in the forest and happen upon a creepy house of folklore. They are invited in by its host Lon and despite his warm welcome, something else lurking in the house intends to give them the scare of their lives.
Ash and his friends finally arrive in Laverre City and immediately head over to the Gym only to find that it's closed due to its seasonal Fashion Show. They instead meet Sawyer, who had a Gym battle with Clemont recently and gets to challenge the Gym Leader Valerie during the show.
Ash challenges Valerie to a battle for the Fairy Badge and finds that appearances aren't everything when he faces her Fairy-type Pokémon.
Before parting ways, Ash and Sawyer decide to have a three on three battle where the former helps give the novice trainer gain useful experience.
The gang helps a newly hatched Noibat learn how to fly, but Team Rocket tries to take it for themselves, leaving Hawlucha to keep Noibat safe.
While training Noibat to fly, Ash and the gang learn about a competition called the Pokémon Sky Relay. Ash decides to compete in it with his three Flying-types in hopes for Noibat to fly properly. Team Rocket has other plans up their sleeve when they enter as well.
Ash and his friends arrive at a village, where they meet a group of Pikachu and their owners, Frank and Jean. Impressed with Ash's Pikachu, Frank wants to cast him in a movie with the Cosplay Pikachu.
When Ash and his friends arrive at a factory where workers make Poké Balls, Team Rocket appears in another plot to steal all the Poké Balls made in the Poké Ball Factory as well as the gang's Pokémon, including Pikachu.
The time has come for Serena's second Pokémon Showcase. Only this time, she faces a tougher competition when a familiar face also appears entering the Showcase to back Serena into a corner.
Ash and the others spend the night at a run-down hotel and find it under the control of a gang of thugs who wager Pokémon as prizes for battles. However, when they meet a timid Rotom, they learn that the hotel was not always so dark.
Ash, his friends, and Team Rocket arrive at a costume festival to have fun. During the festivities, Jessie witnesses a Pumpkaboo falling in love with her Pumpkaboo and decides to do something to help it.
While continuing on their next adventure, Ash and his friends ride on Mamoswine through the hills as it has heavy snow and come across an Abomasnow, who asked for their help to help his sick Snover.
When a Pokémon Center suddenly loses power, Clemont sends Chespin and Bunnelby on an errand to pick up a part so he can fix the generator.
When Braixen accidentally breaks her branch while practicing for the next Pokémon Showcase, Serena seeks help after seeing that the branch meant so much to her Pokémon.
Ash and the gang reunite with Trevor. He explains his interest in snapping a picture of the legendary Moltres rumored to have been spotted nearby on Mt. Molteau.
When Team Rocket tries and fails to capture a Tyrunt, Ash and the gang help to protect it.
After defeating Team Rocket, Clemont and Bonnie tell Ash and Serena a story of how they first met Bunnelby.
Serena finds an Eevee who loves dancing and performing, but it turns out to be shy and afraid of people. Serena sets out to bond with it.
While Serena helps her newly captured Eevee, Tierno and Shauna, along with their newly evolved Blastoise and Ivysaur, appear and help her to attempt to address Eevee's shyness.
The time has come for Serena's third Pokémon Showcase. Serena gets ready to begin her next performance hoping to obtain her second key in the Showcase.
With the Showcase a success for Serena, Ash and his friends continue their visit to Anistar City for Ash's next gym battle with Olympia. After meeting her and learning about Frogadier's past, the Anistar sundial seems to be in trouble.