Superman, about to finally divulge his identity and his feelings to Lois Lane, suddenly finds his mighty hands full when Brainiac, a powerful computer, bent on universal domination and Lex Luthor team up to defeat him. Armed with new weapons and a special strain of kryptonite infused in his body, Brainiac becomes the most powerful enemy the Man of Steal has ever faced. When Lois Lane is critically injured by a force beam that was intended for him, Superman must race into the mysterious Phantom Zone to find a cure. Brianiac, believing Superman to be dead, betrays Lex Luthor and begins his attack on the city of Metropolis and ultimately Earth. Will Superman survive the Phantom Zone in order to defeat his deadly foes, save Lois and Metropolis?