When LexCorps accidentally unleash a murderous creature, Doomsday, Superman meets his greatest challenge as a champion. Based on the "The Death of Superman" storyline that appeared in DC Comics' publications in the 1990s.
Lex Luthor is frozen during a battle with the Justice League. He thaws out in the 31st century, discovers Time Trapper and prevents Superman's arrival to Earth as a baby. Future teen heroes Karate Kid and Dawnstar must stop him.