As the Turtles continue to get used to a world leading the Foot Clan post-Shredder, they return to the Technodrome to monitor the revival of the Utroms on Burnow Island. They are surprised to meet a new mutant Leatherhead! Will the mysterious mutant be friend or foe? Collects issues #56-60.
In a world where Shredder leads the Turtles, all hope seems lost! With the Turtles brainwashed to follow Shredder, Splinter forms a new group in a last ditch effort to save his sons... and New York City!
While the Turtles and Splinter are reeling from a surprise attack by Kitsune, exposing weaknesses in their defense, the Street Phantoms use the opportunity to pounce. Collects issues #61-65.