Inspired by the best-selling DC comic The Death of Superman, the animated feature Superman Doomsday finds the Man of Steel locked in mortal combat with an intergalactic serial killer named Doomsday. Never before have two rivals of such equal footing squared off in a duel to the death that could determine the fate of an entire planet. Will Superman summon the strength needed to save Metropolis by making the ultimate sacrifice, or could it be that the denizens of this bustling city are about to witness the demise of the greatest protector they ever had?