At the end of the previous episode, the Teenage Mutant Ninja Turtles sent the Technodrome back to Dimension X with Krang, Shredder , Bebop and Rocksteady in it. The Technodrome now stands on an asteroid. Krang and Shredder want revenge and send Bebop and Rocksteady to Earth to bring the entire Channel 6 building to Dimension X via trans-dimensional thrusters. Krang disguises them as humans, so they can go unnoticed. But the disguise only lasts for a few hours, so they must hurry. Bebop and Rocksteady also have a Pretendicon, a robot disguised as Splinter, to lure the TMNT into the building and send them to Dimension X.