With all the turtles living in April's apartment, things are getting a little crazy. But, when Donatello stumbles upon a fantastic monster in the basement, things get crazier.

On a training run Leo is ambushed by a major Foot attack force, including Foot Tech Ninjas, their old enemy Hun, and a new threat: the Foot Elite!

When the Foot Ninja attack April's apartment in force, the Turtles fight against overwhelming odds to get the wounded Leo to safety.

The Turtles, Splinter, Casey and April just barely manage to escape from the explosion that destroys the antique store. They hit the road and hide out at Casey's grandmother's old farmhouse, but Leonardo is badly wounded.

The Turtles and Splinter continue to fight their way up through the Foot Headquarters skyscraper, facing down three misshapen Mutant Shredder Clones, a hallway of traps, and the Mystic Ninja.

With Stockman showing up in the middle of the final battle between our heroes and the Shredder, everything is thrown into chaos ... so much so that our heroes must join forces with the Shredder and Hun to defeat Stockman.

The Turtles successfully infiltrate the mysterious TCRI Building, where they manage to sneak into its inner sanctum, and locate the unconscious Splinter inside a stasis tank.

The Turtles use new technology to create new weapons in an effort to escape the future.

A computer virus traps the Turtles inside the Dojo and they must fight for their lives.

Raph competes in a professional wrestling tournament, which is interrupted by a banned wrestler looking to prove himself.

Mikey is excited when a video game sequel is released; the Turtles need a guide to navigate the mall.

The Turtles find out that Agent Bishop is alive in the year 2105.

Ultimate Drako's time manipulations have sent Donatello to an alternate reality... and it's not pretty. It's one possible future, a horrible nightmare. The Shredder is all powerful.

Still recuperating up at Casey's grandmother's farm, the turtles are feeling the sting of boredom. Luckily, a scientist known as the "Monster Hunter" has come to the area searching for a legendary monster...

With Splinter mysteriously vanished, the Turtles are feeling frustrated, not knowing where to start looking. Impatient with strategizing, Raph heads off on his own - and straight into trouble, of the mobster kind!

After the frustrated Turtles exhaust their search for Splinter, their suspicions turn to the Guardians, and the trail soon leads them to a non-descript building, the initials of its company name spelling out "TCRI."

The Shredder is leaving Earth in a spaceship of his own construction intent upon wreaking havoc on the Utroms and the galaxy. But he's taken on some unwanted passengers and they're not about to let the Shredder get away.

With the Foot, the Purple Dragons, and the Mob becoming more than the Turtles can handle, the TMNT reluctantly call on the help of Shredder's old General: Karai.

The Turtles and Splinter escape the Utrom's virtual reality device, but now they must escape TCRI before it is destroyed. Buttheir only way out is hampered by one small obstacle: SHREDDER AND THE FOOT!

The Battle Nexus tournament begins to take it's toll on the TMNT : Leonardo is poisoned, Splinter is framed, and Lord Draco moves closer to victory.

The Battle Nexus Tournament nears it's conclusion : Dontello finds himself fighting for his life with Usagi Yujumbo as Mikey is poised to become Battle Nexus Champion. Leonardo's condition worsens, and Splinter is still in prison. Worse still, Lord Draco now has control of the Daimyo Warstaff...

The Turtles discover more about their master Splinter as the Battle Nexus tournament continues. They also have a run-in with a warrior who Splinter defeated in the tournament three years ago: Lord Draco.

Leonardo returns from Japan to find the lair in ruins and his family nowhere to be seen. As he investigates he finds that the Foot is back to full strength - with Karai as their leader. Since the Foot believe Leo to be dead, he puts all that he has learnt from the Anicent One into practice...

With the outbreak-mutant situation the Turtles feel they have to deal with and Donatello sick his brothers leave him with Casey and April for care. But Donatello is not sick but in the last stages of a second mutation.

With Donatello sick the Turtles are desperate. So desperate that they decide to try and sneak into Bishops facility, where they realize they have to make a deal with the devil if they want to cure Donatello