Plot
In a parallel universe, Lex Luthor is the greatest hero on the planet. And the world's gravest threats? A group of superhumans known as the Crime Syndicate--twisted mirror images of the Justice League! Luthor must trust Superman, Batman, Wonder Woman, Green Lantern and The Flash in order to defeat them--with the fate of two universes on the line! Worlds collide in JUSTICE LEAGUE: CRISIS ON TWO EARTHS!