THE MAN OF STEEL VS. EARTH’S MIGHTIEST MORTAL! When the immortal Martian wizard Karmang seeks to resurrect his long-dead race, he enlists Black Adam and the Quarrmer to capture the energy required–by annihilating Earth-One and Earth-S! To keep Superman and Captain Marvel from interfering with this plan, the two champions are set against one another. Now it’s the Man of Steel versus the World’s Mightiest Mortal–with the fate of two worlds in the balance!