The Turtles journey into cyberspace as Cybernauts on a mission to save as much of Master Splinter as they can find. But, they find far more than they bargined for as an old foe is re-born in the digital world...

While Don focuses on collecting Splinter's data bits, his brothers find themselves pulled into a war between The Foot and the Purple Dragons. But things get a lot worse when the cyber-Shredder finds a way out of the digital realm by taking over the powerful robotic body of his old crony, Baxter Stockman! With Splinter's data bits just within his grasp, Don is forced to make a terrible choice, help his father or help save his brothers from the Shredder.