Within the Woods

Narrowly escaping from the Shredder and the Kraang, the turtles, April, and Casey take shelter at April's family farmhouse upstate to recover and figure out how to stop the Kraang. The turtles deal with not having Splinter around and the possibility of Leo not making a full recovery, and a mysterious creature stalks the group.

A Foot Too Big

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

Buried Secrets

When the guys discover a Kraang ship buried under April's house, they also uncover April's lost mother.

The Croaking

After getting in trouble for trashing the house, Michelangelo gets upset and flees. After meeting the Napoleon Bonafrog, a member of the Punk Frogs, he unknowingly joins them in a plan to capture the humans and take over the city.

In Dreams

When the Turtles are trapped in their dreams by creatures, April and Casey must figure out how to wake them up.

Race with the Demon!

When Casey and Donatello bond while building Casey's new hot rod, the bond is challenged by a hot-rodding mutant.

Eyes 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.

Vision 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.

Return to New York

When the Turtles return to the city to search for Splinter, they discover that the city has been overrun with Kraang.

Serpent Hunt

As the Turtles search for Karai, they are forced to deal with a city filled with Kraangdroids as well as Zeck and Steranko.

The 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.

Battle for New York (1)

While the Mighty Mutanimals lay siege to TCRI, the Turtles must brave the bizarre world of Dimension X to save the enslaved people of New York.

Battle for New York (2)

Casey Jones vs. the Underworld

Annoyed he was left out of the fight against the Kraang, Casey hunts down the Purple Dragons and Shredder to prove he just as great as the turtles.

The Noxious Avenger

A new and unfamiliar mutant known as Muckman begins to gain notoriety as New York City's 'Monster Hero.'

Clash of the Mutanimals

The Shredder kidnaps and experiments on the Mighty Mutanimals.

Meet Mondo Gecko

A skateboarding reptilian becomes friends with Mikey and Casey.

The Deadly Venom

Karai becomes brainwashed and goes after the turtles.

Turtles in Time

The turtles travel through time because of an apprentice's actions, and they must unite to combat Time Master Savanti Romero.

Tale of the Yokai

When the Turtles are accidentally transported to the past, they happen to cross paths with a familiar ninja clan.

Attack of the Mega Shredder!

Leonardo decides to sneak into Shredder's lair alone, and winds up facing the biggest mutant threat yet.

The Creeping Doom

After an accident, Donnie finds himself slowly losing his intelligence.

The Fourfold Trap

The Turtles are baited by an unknown enemy into deadly traps.

Dinosaur Seen in Sewers!

Raph makes a new friend named Zog, an alien Triceraton.

Annihilation: Earth! (1)

When the turtles get word of the Kraang's return, they realize there is an even bigger threat coming to Earth.

Annihilation: Earth! (2)