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26 Episodes 2012 - 2013
Episode 1
Fri, Sep 28, 201224 mins
Years ago, Hamato Yoshi, a Japanese ninja master, moves to New York City and purchases four baby turtles, before witnessing a shady deal in an alleyway; in the resulting fight, he and the turtles are coated by a strange chemical mutagen, transforming Yoshi into a humanoid rat and the Turtles into anthropomorphic form. In the present, Yoshi, now known as Splinter, has trained the Turtles-Leonardo, Donatello, Michelangelo and Raphael-in the art of ninjutsu, and celebrates their fifteenth "Mutation Day" with them. Splinter begrudgingly allows the Turtles to visit the surface world, where they encounter pizza for the first time and observe a teenager named April O'Neil, with whom Donatello becomes infatuated. April and her father Kirby are then attacked by a group of strange men, and, unable to work together, the Turtles fail to stop them from being kidnapped-immediately after, Michelangelo discovers that the kidnappers are androids piloted by brain-like aliens, but the other Turtles dismiss him. Splinter chastises the Turtles for their failure, yet agrees that they have to take action, deeming Leonardo the Turtles' leader in order to help them function as a team. The Turtles track down the kidnappers' van and their associate, Snake. In the process, they discover another canister of the chemical mutagen.
Episode 2
Sat, Sep 29, 201226 mins
The Turtles interrogate Snake using the Mutagen, learning that the kidnappers are called the Kraang and that they have been kidnapping scientists across the city. Snake escapes soon afterwards, and overhears Leonardo and Raphael discussing a fake plan to rescue the O'Neils. The Turtles recoup in the lair, where Splinter warns Leonardo that every leader must prepare to face failure, recounting the story of how he lost his wife Tang Shen and daughter Miwa in the final battle with his rival, Oroku Saki. The Turtles sneak into the Kraang's base, where Michelangelo accidentally triggers the alarms, and the Kraang try to make off with the O'Neils. Before the Turtles can rescue them, they end up in a fight with Snake, who had been exposed to the Mutagen and transformed into a giant weed monster, which Michelangelo dubs "Snakeweed". Donatello rescues April but is forced to leave Kirby, while the other Turtles electrocute Snakeweed. Once they have escaped, April is left with her aunt, and Splinter expressed pride in Leonardo's leadership. The news reports a supposed ninja sighting; and, watching the report in Japan, Oroku Saki, now known as the Shredder, realizes that Hamato Yoshi is still alive and decides to travel to New York to finish their battle.
Episode 3
Sat, Oct 6, 201224 mins
The turtles are caught on a mobile phone's camera and must retrieve it. This is complicated by the phone's obnoxious owner, who constantly provokes Raph into losing his temper.
Episode 4
Sat, Oct 13, 201224 mins
To prove that Turtles can be friends with humans, Michelangelo uses a social networking site to befriend Chris Bradford, a famous martial artist.
Episode 5
Sat, Oct 20, 201224 mins
When the Turtles sneak out against Splinter's wishes, they run afoul of Baxter Stockman, a deranged inventor in mechanical battle armor.
Episode 6
Sat, Oct 27, 201224 mins
Weary of using his simple bo staff to fight the technologically advanced Kraang, Donatello creates Metalhead, a remote-controlled robot turtle to fight in his place.

Episode 7
Sat, Nov 3, 201224 mins
Donatello and April investigate a scientist's disappearance, but discover a conspiracy regarding a bizarre psychic monkey instead.
Episode 8
Sat, Nov 10, 201224 mins
Leo fears his act of mercy has come back to haunt him when Xever holds a local noodle shop owner hostage.
Episode 9
Sat, Nov 17, 201223 mins
After April receives a warning from her imprisoned father, she and the Turtles embark on a mission to save him and stop the Kraang from detonating a mutagen bomb in the city.
Episode 10
Sat, Nov 24, 201224 mins
The Turtles must defend their home in the sewers when Bradford tries to destroy it with a dangerous chemical.
Episode 11
Sat, Dec 8, 201224 mins
When simultaneous threats from the Purple Dragons and Baxter Stockman's mechanical Mousers force the Turtles to split into two groups, Donnie & Mikey must prove that their "B Team" is just as valuable as Leo & Raph's "A Team."
Episode 12
Sat, Dec 15, 201224 mins
Michelangelo befriends an unstable mutant alligator who possesses a strange piece of Kraang technology, but the other Turtles aren't sure whether Leatherhead is a friend or a foe.
Episode 13
Fri, Jan 25, 201324 mins
The Turtles must face off against a new enemy, The Rat King, who threatens not only to take control of the city, but Splinter's mind as well.
Episode 14
Fri, Feb 1, 201324 mins
Leonardo, tired of Raphael's constant criticism, lets his brother try his hand at leadership for a while. Meanwhile, Leonardo meets a beautiful and dangerous female ninja who tries to lure Leonardo to the dark side.
Episode 15
Fri, Feb 8, 201324 mins
The Turtles get their first taste of high school when April's school project draws Kraang attention.
Episode 16
Fri, Feb 15, 201324 mins
The Turtles meet their first fanboy when a teenage wannabe hero decides to fight crime and dress up as "The Pulverizer."
Episode 17
Fri, Mar 1, 201324 mins
While breaking into the hostile environment of TCRI headquarters, the Turtles discover the true intent of the Kraang and resolve to stop the alien invasion once and for all.
Episode 18
Fri, Mar 15, 201324 mins
As the Turtles try to foil a Kraang invasion plot, they are hunted by a giant, indestructible cockroach.
Episode 19
Fri, Apr 5, 201324 mins
Fed up with being humiliated by Fishface and Dogpound and defeated by the Turtles, Baxter Stockman seeks revenge by luring both parties into a deadly labyrinth.
Episode 20
Fri, Apr 12, 201323 mins
After witnessing the Kraang in action, Karai realizes the seriousness of the alien threat and approaches the Turtles to propose an alliance.
Episode 21
Sat, Apr 27, 201324 mins
While the Turtles are infiltrating an undersea Kraang base, the Foot Clan attempts to capture April, forcing her to fend for herself in a battle of wits against Karai.
Episode 22
Sat, May 11, 201323 mins
When Shredder schemes to create a fearsome army of mutants, the Turtles have no choice but to rely on the help of the newest recruit to the Foot Clan: The Pulverizer!
Episode 23
Sat, Jul 20, 201324 mins
After Leonardo, Raphael, and Donatello fall under the control of a parasitic Wasp, Michelangelo must fight his brothers to save them.
Episode 24
Sat, Jul 27, 201324 mins
Donatello breaks into a secret Kraang detention center in order to rescue Kirby O'Neil. But when he discovers they are trapped inside with a deadly mutant prisoner, he realizes that breaking in was the easy part.
Episode 25
Thu, Aug 8, 201324 mins
As the Turtles make a desperate assault on TCRI to shut down an alien portal, they find themselves engaging in the most difficult battle yet.
Episode 26
Thu, Aug 8, 201325 mins
As the Turtles make a desperate assault on TCRI to shut down an alien portal, they find themselves engaging in the most difficult battle yet.