Batman travels to Metropolis when the Joker steals a solid Kryptonite statue and makes a deal with Lex Luthor to kill Superman.

Lois Lane becomes romantically tied to Bruce Wayne and is kidnapped by the Joker in an attempt to lure superman to his death.

Lois ends her romance with Bruce Wayne when she discovers that he is Batman. Lex Luthor tries to end his alliance with the Joker, but the Joker turns the tables and kidnaps Lex and steals a powerful aircraft to attack Metropolis.