Lex Luthor forms a criminal gang called the "Legion of Doom" and uses a dream-machine to make the Super Friends commit crimes. When the Super Friends are forced to turn themselves in to police headquarters, the guards reveal themselves to be Bizarro and the Cheetah, who send the Super Friends to the sun. The Legion of Doom then uses the Justice League satellite with Luthor's mutation device to turn women into Cheetah clones and men into Bizarro clones, long enough for them commit profitable robberies. The Super Friends return to Earth to reverse the damage done and retake The Hall of Justice. They then disguise themselves as Bizarro and Cheetah clones to stop the Legion of Doom.