Slash, Krang and Bellybomb are on their way to Earth when they decide to stop at a nearby planet and hunt for some lunch - much to their surprise, upon landing they discover Bebop and Rocksteady! The two complain about being bored and join the terrible trio on their trip to our planet.
Meanwhile, the TMNT are on a mission to investigate one of Shredder's numerous bases. As the Turtle boys arrive, they quickly discover that Shredhead is home - and a battle ensues. After a brief skirmish, Krang's spacecraft suddenly smashes through the ceiling and the Turtles are face to face with quite a motley crew. Slash, Bebop and Rocksteady attack the TMNT while Shredder slips away to investigate the spacecraft. Inside the ship, Saki finds Krang and Bellybomb, who gives Shredder a face full of mega-halitosis that knocks the ninja unconscious. The aliens lay Shredder on a table, and Krang proceeds to possess the man in a most disturbing manner.