The Teenage Mutant Ninja Turtles are back in an all-new animated series on Nickelodeon! Surfacing topside for the first time on their fifteenth birthday, the titular turtles, Leonardo, Michelangelo, Raphael and Donatello, find that life out of the sewers isn't exactly what they thought it would be. Now the turtles must work together as a team to take on new enemies that arise to take over New York City.
The fugitoid brings the gang to 6 months in the past in order to prevent the Triceratons getting the parts of the black hole generator that was used to destroy the Earth. However, after stopping to get fuel, they end up causing lots of trouble at the port.
The Turtles and their enemy crash-land on an ice moon and they must put aside their differences in order to survive.
Casey releases a wish-granting alien named Wyrm, who wants his freedom to do whatever he wants to the universe.
A shark-like bounty hunter is hired by Lord Dregg to destroy the turtles, who choose to hide out in an abandoned space station.
The Turtles find themselves on a planet of pure evil.
When microscopic aliens invade Mikey's mind, the Turtles have to chase them through the strange world of Mikey's subconscious.
The Turtles are captured by the Triceratons and are forced to fight in a gladiator-like arena for their lives.
The Turtles must gain the trust of the Utrom Council in order to find the next piece of the black hole generator.
The Turtles journey through an ocean-like area of space.
The Turtles are transported to another dimension where they meet their 1980s counterparts and work together to battle Krang.
Donatello is feeling inferior to Fugitoid, but his intellect is put to the test when the Triceratons attack.
When Raphael loses his fighting mojo, he must overcome his feelings to save his brothers from certain doom.
The team must overcome impossible odds in order to obtain the final Black Hole Generator piece that is located on the planet Magdomar.
As the team finally reaches Earth, Fugitoid reveals a horrible secret about his past.
April faces a deadly new enemy when she graduates to full Kunoichi; the Turtles must deal with the return of some old foes.
When Leonardo secretly allies himself with Karai, he gets himself into deeper danger than he could have realized.
Raphael must overcome his fear of insects to lead the team when they are forced to battle Stockman-Fly's new insect minions.
Don Vizioso's gang tracks the Turtles with a slew of Anti-Mutant weapons.
Donnie experiments with April's fragment of the mystical Sol Star (which she is becoming quite obsessed with, due to its mighty power drastically strengthening and further developing her psionic abilities), but accidentally supercharges it with electricity, that stirs sudden sentience and autonomy in the crystal fragment. It then uses this to bring four of the main characters from Mikey's favorite comic book to life. Mikey easily befriends the heroes Wingnut and Screwloose, and he and Casey join them in stopping crime. But when they tell the two superheroes about the fact that they're fictional characters, and show them the Soul Star, it causes Wingnut and Screwloose to transform into insane monstrous forms. Meanwhile, Donatello becomes incessantly worried that the Sol Star fragment is affecting April's mental stability.
For the first time, the Turtles encounter something they cannot defeat – the Super Shredder!
The Turtle team hunts for their Sensei, but soon realizes they are being hunted as well.
Donatello becomes concerned and decides to test April, only to discover that her psychic abilities are rapidly growing in power.
Raphael's bonding with little Chompy gets interrupted by the invasion of Tokka, who has come to Earth searching for him.
A dangerous female mutant by the name of Alopex appears with a personal vendetta against Tiger Claw.
Splinter must lead the turtles and the Mighty Mutanimals on the hunt to defeat his old enemy.