The Turtles learn the cost of slacking off when Splinter is badly hurt during a confrontation with Shredder.

The personalities of Shredder and Splinter are switched when a device is accidentally activated during a battle between the Turtles and their enemies. As Shredder plans the Turtles' demise and Splinter plans on how to get back to his body, everyone else is clueless.

In the middle of a summer heat wave, someone is destroying all the air conditioners and taking all the city's freon. In the meantime, Vernon and Burne go looking for the Turtles, but find something else.

The intentions of the Ninja Turtles are put to the test when a controversial TV-figure portrays our heroes as menaces to society.

Emperor Aleister of Malicuria comes to New York City, bringing along a shard of Lydium 90 to the USA.

The Turtles go flying when the Shredder invents a gravity-altering device.

The Shredder thinks he's Michaelangelo after a computer malfunction.

Irma accidentally becomes gigantic and her naturally clumsy nature makes her a danger to the city.

Gangsters are swiping all the antiques in town. And when they swipe most of our heroes, it's up to Donatello and April to find out why. Could Shredder be behind this?

A 14-year-old boy tries his best to help out the Turtles, but with some not so optimal results.

Thompson assigns April to research the growing rat infestation. She is pursued by an army of rats and escapes on a passing city bus.

Dinosaurs invade the Big Apple. Befriending a young diplodocus the Turtles trace the invading dinosaurs to their source finding a lost world.

While Raphael is reliving the past, via the Turtles' photo album, their frog friends in the Florida Swamps are being terrorized by a mutant alligator known as Leatherhead.

A robot warrior arrives from 400 years in the future in 20th-Century New York.

Krang's computers detect an alien metal on the surface of the Earth. Krang sends Shredder, along with an Alien Metal Detector, to the surface to find it.

Still searching for a way to destroy the Turtles, Krang develops a super pump that he intends to use to flood the sewers.

Full of self doubt, Leonardo leaves the team. Michaelangelo, Raphael, and Donatello all take turns being leader as they try to figure out why the sun is getting smaller.

A bump on the head leaves Leonardo thinking that he is in 17th century France, and that he and his comrades are Musketeers.

Shredder programs the city's new garbage collecting super-computer to collect the Turtles. But when Shredder doesn't specify 'Ninja' Turtles, the super-computer collects them all! Turtles of the city of every shape and size are not safe.

Aliens abduct Donatello and Rocksteady.

A visit to Earth from a Polarisoid results in havoc when Shredder comes into possession of the alien's camera, because it does more than just take pictures.

Krang sets his sights on a powerful Nuclear-Powered Submarine, believing it's fuel will be more than enough to power the technodrome.

Baxter Stockman returns for revenge against the Turtles and Shredder, while our heroes attempt to stop Shredder's plan to siphon water from an underground reservoir.

An eager vigilante is causing a stir in the city, while Krang and Shredder take control of all the machines in the city. Maybe this new 'hero' can help the Turtles.

In an attempt to hijack two separate trains carrying the ingredients needed to make mutagen, Rocksteady and Bebop cause their head-on collision, resulting in the spillage of both chemicals in the city's train yard.

High ranking corporate executives are kidnapped by men in business suits. The Turtles don't get involved until they learn that one of these corporations is the world's largest suppliers of pizza.

Michaelangelo gets a job as a pizza delivery boy. But who's his new boss?

Shredder and Krang produce hi-tech versions of Rocksteady and Bebop to keep the Turtles busy.

A skilled, and lovely, ninja warrior is hired by Krang to defeat the Turtles. Shredder's replaced, Leonardo's met his match.

Splinter suffers amnesia as the Turtles try to remind him that he is the true leader of the Foot Clan.

It's Michaelangelo's birthday, but none of his brothers seem to remember, and it frustrates him greatly.

A rabbit ronin warrior from an alternate dimension is lost in our world. While the Turtles help him adjust, Shredder steals a dragon egg to unleash it on the city.

Shredder tricks Usagi Yojimbo into battling the Turtles.

While the Turtles are suffering from turtle pox, a disease that affects only mutant Turtles, Krang has developed a robotic turtle that he calls Metalhead.

Leatherhead has come to the city searching for the Turtles. While crawling through the sewers he encounters the Rat King who charges him with trespassing.

Irma is kidnapped by Bebop and Rocksteady and is replaced by a robot that looks just like her that is programmed to eliminate the turtles.

The Turtles must clear their names when they are believed to be jewel thieves who stole a priceless emerald during a magic act run by a wizard named Boldini.

Zach and his brother Walt visit the Turtles. As they leave, Walt takes a map that could guide Shredder to the lair if it happens to fall into the wrong hands.

Shredder tries to trick the Turtles into eating cookies made with anti-mutagen. Michaelangelo, wanting to be a human, tries one of the cookies and it mutates him into a teenager.

Kala's pet Grybyx, which has a really bad temper whenever it gets hungry, escapes from Dimension X through a portal to Earth, causing trouble for the Turtles.

While searching for a device to transform crude oil into liquid hydrogen, Krang accidentally brings Mr. Ogg from Dimension Z to earth.

An interdimensional alien spacecraft leads Baxter Stockman to his latest vengeful plot to destroy the Turtles and Shredder.

Someone is stealing all the kimonos in the city. After Master Splinter's favorite kimono is stolen, April's famous detective aunt helps the Turtles retrieve it.

The Turtles are frustrated that they let Shredder slip away from them again. They feel like giving up, and wish they had never been born.

After several failed attempts to get the Technodrome re-energized, Shredder and Krang run one last-ditch distraction for the Turtles at Fort Charles while Bebop and Rocksteady steal energy fuel cells from the neighboring space research center.

The Technodrome is up and running again, and it is up to the Turtles to hinder Shredder and Krang from getting to the surface.

After several setbacks, Shredder and Krang steal all of New York's electricity and charge it into a giant transdimensional gateway, designed to send Earth into Dimension X. The Turtles must defeat their enemies once and for all before Earth is destroyed by Krang's Rock Soldier army.