It's down and dirty time. Splinter is imprisoned. Leo is dying of poison. Don and Usagi are fighting for their lives and the life of the Daimyo against a horde of assassins.

As the BattleNexus Tournament continues, Leonardo has been poisoned and lies unconscious fighting for his life. Splinter is wrongly imprisoned for an attempt on the Daimyo's life.

Finding themselves in an inter-dimensional tournament, our four teenage mutant ninja turtles discover a past about Splinter they never knew.

As he does every three years, Splinter mysteriously goes off leaving his four boys at home. Where he's going, he won't say. Unbeknownst to Splinter, the four boys are curious and follow.

The Justice Force, a group of old school super heroes.

An artifact was found in April's restored Antique Shop. It's a strange puzzle box that's connected to April's the disappearance of her Uncle Auggie.

The Shredder is back ... rested up ... recuperated and repaired, and he has a new plan for global domination. The only thing he wants to do first is exterminate the turtles.

The Turtles encounter an injured dinosaur alien, who helps them against a new assault from the Shredder.

Casey loves the new sport of Super Slam Hockey.When the legendary Golden Puck, a piece of hockey history dating back to 17th Century Holland, is stolen.Casey's beyond indignant.

Now that they've got a ShellSub, the Hudson River becomes the Turtle's underwater wonderland... NOT!The junk in the riverbed is even more dangerous than the city above when the Turtles run into their old nemesis the GarbageMan.

The turtles have their hands full fighting the mob, the Purple Dragons and what's left of the Foot. Now, they've joined forces with Karai, who used to be the Shredder's right hand "man." Can they trust her?

The Turtles find themselves in the middle of an escalating gang war between the remains of the Foot, the Purple Dragons and the mob. Can the Turtles survive the deadly onslaught?

It's a 3 way war between the Purple Dragons, The Foot Clan, and the New York Mob. And Leonardo believes that he and his brothers were the cause of all this.

The Turtles return to the ancient underground city they discovered in "Notes From the Underground", only to find the city abandoned, its crystal moon power source missing, and its human population reverted to monsters.

The Turtles discover that they're not alone in the sewer. The green ooze which mutated them years ago also claimed another victim... Leather Head!

The Turtles are in big trouble from a microscopic enemy when the bizarre Nano-monster returns for a rematch!

The TMNT return to Casey's Grandma's house for some rest and refreshing the mind. They soon began to think back on what they've been through with the Shredder.

There's a bad dude in town, and he's looking to pick a fight with Leonardo. This Ultimate Ninja has come halfway across the inter-dimensional universe to fight the Shredder, defeat him and gain glory.

The Turtles and Splinter escape the Utroms' high-tech virtual reality device, only to find the Shredder and all his forces waiting for them.

The turtles and Splinter have taken a little trip down the Utroms' memory lane via a high-tech virtual reality device experiencing first hand the Utroms' crash landing on Earth and their life in feudal Japan.

Back from their adventures in space, the Turtles find themselves in the headquarters of the same aliens who teleported them across the universe!

The turtles are faced with their biggest challenge yet, getting home!

Welcome to the Tri-sports Arena filled to capacity with cheering Triceraton crowds thirsty to watch grueling combat. Where gladiators go in but never come out.

The Turtles are captured by the Triceratons and thrown into a Tri prison, their lives to be used as a bargaining chip to convince the Fugitoid to build his Teleportal device.

On the planet D'Hoonnib, the Turtles team up with the Fugitoid, a.k.a. Professor Honeycutt, a scientist trapped in a robot's body, who is being pursued by the rogue military forces of General Blanque.

Our four heroes find themselves beamed halfway across the universe to the planet D'Hoonnib and right into the middle of a police action!