Superman spends his time saving not just the world, but individuals, when one day that is put to the test. As John Corben is celebrating his retirement speech, Lobo interrupts. He not only ruins the celebration and hunts Superman for a bounty, but he outs Superman as an ALIEN! John Corben, wanting revenge against aliens and Superman, is easily manipulated by Lex Luthor to become Metallo. With the help of his close friends, and a few new allies, Superman must take on Metallo, while also trying to fix his image.