The villainous Lex Luthor has teamed up with The Joker, and it could spell the end for Superman! Cracking The Joker's diabolical plot, the World's Greatest Detective, Batman, rushes to Metropolis to join his colleague in the fight against evil. What do you do when Gotham City's most dangerous criminal teams up with Metropolis's most villainous billionaire? Call out the world's two greatest Super Heroes - Batman and Superman!