Air date: 10/1/88
Shredder returns from Dimension X and sets out to frame the turtles with a group of thugs dressed as them.
The Incredible Shrinking Turtles
Air date: 10/8/88
The turtles seek out the fragments of the eye of Sarnoth, a crystal with unimaginable power. After finding the first fragment, Shredder steals it and uses it to shrink the turtles.
It Came from Beneath the Sewers
Air date: 10/15/88
Shredder uses one of the fragments of the eye of Sarnoth to create a mutant plant and unleashes it on the city to attack the turtles.
The Mean Machines
Air date: 10/22/88
Shredder uses a fragment of the eye of Sarnoth to power a super computer in the hopes of opening a portal to Dimension X. Meanwhile, the turtles deal with machines going haywire and trying to destroy them.
Curse of the Evil Eye
Air date: 10/29/88
Shredder completes the eye of Sarnoth, attaches it to his helmet and plans to unleash its power on the world. However, when the turtles intervene the helmet falls into other hands.
The Case of the Killer Pizzas
Air date: 11/5/88
Shredder & Baxter Stockman switch meatballs on some pizzas, used as prizes in a contest, with some weird alien eggs from Dimension X. The Turtles must battle the Xenomorph-like creatures that hatch from the eggs in order to save the city.
Enter: The Fly
Air date: 11/12/88
Shredder gets Bebop and Rocksteady back as his henchmen in exchange for Baxter. When Krang tries to exterminate him, a freak accident occurs turning him in a mutant fly.
Splinter No More
Air date: 11/26/88
Donatello devises a cure to make Master Splinter human again. Meanwhile, Shredder plans to open a gate to Dimension X.
Teenagers from Dimension X
Air date: 12/10/88
The Neutrinos return to Earth after hearing in on the plan of Krang and Shredder to get rid of the turtles via brain-drain. Shredder finds interest in their Starmobile's ability to open dimension portals and tries to get his hands on it, and meanwhile the turtles try to get the Starmobile's main energy source running again.
Invasion of the Punk Frogs
Air date: 11/19/88
The turtles deal with four mutant frogs who are now under Shredder's command and also deal with a group of anti-mutant enforcers.
New York's Shiniest
Air date: 12/3/88
A robot cop, Rex-1, helps April and the Turtles defeat an evil army of robot cops under the control of Shredder.
The Cat Woman of Channel Six
Air date: 12/17/88
A freak accident from a transporter turns April into a cat-woman. Irma meets TMNT in order to rescue her.
Return of the Technodrome
Air date: 12/24/88
While Splinter goes out on a retreat, the turtles must try to stop the Technodrome from returning to Earth.