Clark Kent, the last survivor of the dead planet Krypton, uses his amazing powers to defend people of his adopted world, Earth, and become Superman.

As the Joker visits Metropolis with a plan to kill Superman for Lex Luthor, Batman pursues the clown to Superman's turf.

Embittered by Superman's heroic successes and soaring popularity, Lex Luthor forms a dangerous alliance with the powerful computer/villain Brainiac. Using advanced weaponry and a special strain of Kryptonite harvested from the far reaches of outer space, Luthor specifically redesigns Brainiac to defeat the Man of Steel.