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. ...

After witnessing the Kraang in action, Karai realizes the seriousness of the alien threat and approaches the Turtles to propose an alliance. ...

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. ...

As the Turtles try to foil a Kraang invasion plot, they are hunted by a giant, indestructible cockroach. ...

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 a ...

The Turtles meet their first fanboy when a teenage wannabe hero decides to fight crime and dress up as The Pulverizer. ...

The Turtles get their first taste of high school when April's school project draws Kraang attention. ...

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 ...

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. ...

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 ...

When simultaneous threats from the Purple Dragons and Baxter Stockman's mechanical Mousers force the Turtles to split into two groups, Donnie and Mikey must prove that th ...

The Turtles must defend their home in the sewers when Bradford tries to destroy it with a dangerous chemical. ...

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 c ...

Leo fears his act of mercy has come back to haunt him when Xever holds a local noodle shop owner hostage. ...

Donatello and April investigate a scientist's disappearance, but discover a conspiracy regarding a bizarre psychic monkey instead. ...

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. ...

When the Turtles sneak out against Splinter's wishes, they run afoul of Baxter Stockman, a deranged inventor in mechanical battle armor. ...

To prove that Turtles can be friends with humans, Michelangelo uses a social networking site to befriend Chris Bradford, a famous martial artist. ...

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 t ...

When Splinter allows his teenage sons, the Mutant Ninja Turtles, to visit the surface for the first time, they discover that the surface world isn't as simple as it first ...

When Splinter allows his teenage sons, the Mutant Ninja Turtles, to visit the surface for the first time, they discover that the surface world isn't as simple as it first ...

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