Judge Death makes a dimensional jump to Gotham City, murdering two lovers and a police officer. Batman defeats Death, who flees in spirit form. Among the remains of his host body, Batman finds a dimensional jump belt that he accidentally activates, transporting him to Mega-City One, where is confronted by Mean Machine Angel. As Mean Machine attacks Batman, they are both confronted by Judge Dredd. Mean Machine flees to Gotham using the belt, then wanders into the city looking for Judge Death.
After killing Benny, Death attempts to turn on Scarecrow, who stops him with a dose of his fear toxin (exposing Death to visions of fluffy bunnies and My Little Ponies) and directs him to a heavy metal concert featuring a band called Living Death. Meanwhile, Mean Machine demolishes a bar and is directed to the same concert.
As Death slaughters the heavy metal band, Batman, Anderson, and Dredd appear. In the battle that follows, Death is on the verge of killing Dredd when Batman uses a batarang to destroy his physical body while Anderson imprisons his spirit in her mind. Mean Machine, stuck in a berserk frenzy that demolishes the stage, is subdued after a pinpoint shot from Dredd destroys the mood-controlling dial on his head. Scarecrow is likewise captured.
Dredd prepares to take Anderson and Mean Machine back to Mega-City One, and insists that Batman come along to complete his “sentence”. They are close to blows when Anderson persuades Dredd to drop the charges against Batman. As they depart, Dredd admits that Batman is a “bit of a tough guy”, implying some respect.