Mikey runs away and befriends a mutant frog. Only to learn the frog and his family have nefarious plans. ...

The turtles find an old alien spacecraft that is connected to April's past. ...

When the Turtles discover Bigfoot in the woods, Donnie befriends it and insists they protect it from a hunter. ...

After 3 months of being in a coma,Leo finally wakes up. Raph tries to train him back to normal, but Donnies medicine makes Leo too sick. Leo drops the medicine and create ...

Leo and Donnie disagree about their plan to stop the Kraang invasion. When Leo makes a critical mistake, he is separated from the team and Donnie must step up as a leader ...

Donnie becomes increasingly jealous of April and Casey's relationship; April is kidnapped by an evil spirit who intends to drain her powers. ...

When Raph accidentally damages a Kraang machine, it allows him to switch brains with a Kraang. Now he must find a way to convince his brothers and Splinter that it's real ...

When Tiger Claw returns, he vows to hunt and destroy the turtles. Meanwhile, Karai finds out the truth about her mother and real father, forcing her to make a life changi ...

Raphael is worried about Casey's ability to handle big mutant threats; Raphael and Casey cross the paths of Slash and his new partner. ...

The Turtles create a retro-mutagen to help April's father;Stockman-Fly kidnaps April. ...

Leonardo considers asking Splinter for help while facing Shredder's new assassin; Donnie must put aside his rivalry with Casey in order to uncover a Kraang plot. ...

The Rat King returns and tries to take control of Splinter again. Meanwhile, April leaves a cat with Mikey and he turns it into a mutant. ...

A fungus mutant spreading through the sewers causes the Turtles and April to experience their worst fears as Leonardo must face his greatest fear--losing his team. ...

After encountering mutants and ninjas, Casey Jones decides to take on pure evil alone. When he meets Raphael, the two hot-headed fighters must put their dislike for each ...

April tries to resume a normal teenage life, but when Karai starts hunting her again, April realizes she may have put her new friend Casey Jones in danger as well. ...

Donatello obsessively experiments with mutagen in a bid to find a cure for April's mutated father. Unfortunately this puts April in danger from a new threat--Mutagen Man! ...

Following her recent acting disappointment, Penny decides she needs to take decisive action to make her career happen by devoting her time one hundred percent into the en ...