This story takes place before Teenage Mutant Ninja Turtles: Turtles in Time #1.
*The Turtles are whisked away to another dimension by a stranger—Renet! Forced to fight for their survival in a tournament featuring the greatest warriors in the universe, the brothers will have to master new fighting techniques and forge new alliances. But with the deck stacked against them, their chance of survival is slim! *Source: idwpublishing.com