1En el bosque
El equipo se enfrenta a la posibilidad de que Leo no se recupere y su situación empeora cuando un mutante nuevo captura a Rafa.
2Un Pie Demasiado Grande
Cuando las Tortugas Ninja descubren a Pie Grande en el bosque, Donnie se hace amigo de él e insiste en que lo protejan de un cazador.
3Secretos encerrados
El grupo descubre una nave Kraang enterrada en la casa de Abril y encuentran.... ¿a la mama de Abril? Cuando Abril se reencuentra con su madre, es realmente lo que parece?
4La legión de las ranas
Maiky se enfada, huye de casa y se hace amigo de una Rana Mutante en el bosque. Cuando descubre que la familia de su amigo Rana planea atacar a los humanos tiene que idear un plan para detenerlos.
5En sueños
Criaturas que se alimentan de sueños atrapan a las Tortugas en su propio sueño y Abril y Casey deben buscar la forma de despertarlos.
6Race with the Demon!
When Casey and Donatello bond while building Casey's new hot rod, the bond is challenged by a hot-rodding mutant.
7Eyes of the Chimera
When Casey, Raph, Mikey and Donnie are captured by a new mutant, April and Leo must overcome disabilities in order to save them.
8Vision Quest
Leo takes the Turtles to train in the woods in an advanced ninja ritual; the Turtles must overcome their weaknesses and face their enemies to become a true ninja.
9Return to New York
When the Turtles return to the city to search for Splinter, they discover that the city has been overrun with Kraang.
10Serpent Hunt
As the Turtles search for Karai, they are forced to deal with a city filled with Kraangdroids as well as Zeck and Steranko.
11The Pig and the Rhino
Donnie finishes a new batch of retro-mutagen in hopes of saving Karai; the Turtles are hunted by Shredder's new henchmen, Bebop and Rocksteady.
12Battle for New York (1)
The Turtles must brave the bizarre world of Dimension X to save the enslaved people of New York. Part 1
13Battle for New York (2)
Part 2
14Casey Jones vs the Underworld
Casey Jones thinks he can take on the criminal underworld on his own, but soon discovers that he is in over his head.
15The Noxious Avenger
A new and unfamiliar mutant known as Muckman begins to gain notoriety as New York City's "Monster Hero."
16Clash of the Mutanimals
The Shredder kidnaps and experiments on the Mighty Mutanimals.
17Meet Mondo Gecko
Michelangelo and Casey become friends with Mondo Gecko, a radical, skateboarding, reptilian teenager.
18The Deadly Venom
When Karai is brainwashed, she begins hunting the Turtles.
19Turtles in Time
When the Turtles are whisked through time by apprentice Time Master Renet, they all must work together to defeat the evil Time Master Savanti Romero.
20Tale of the Yokai
When the Turtles are accidentally transported to the past, they happen to cross paths with a familiar ninja clan.
21Attack of the Mega Shredder!
Leonardo decides to sneak into Shredder's lair alone, and winds up facing the biggest mutant threat yet.
22The Creeping Doom
After an accident, Donnie finds himself slowly losing his intelligence.
23The Fourfold Trap
After being kidnapped by the hypnotized Karai, the Turtles are placed in deadly traps that they must work together in in order to escape. Splinter, in his efforts to save the turtles, is forced to face Karai in order to free her from Shredder's control.
24Dinosaur Seen in Sewers!
Raphael meets a confused alien dinosaur named Zog, the Triceraton.
25Annihilation: Earth! (1)
When the turtles get word of the Kraang's return, they realize there is an even bigger threat coming to Earth.
26Annihilation: Earth! (2)
When the turtles get word of the Kraang's return, they realize there is an even bigger threat coming to Earth.