Clark Kent, one of the last of an extinguished race disguised as an unremarkable human, is forced to reveal his identity when Earth is invaded by an army of survivors who threaten to bring the planet to the brink of destruction.
Determined to ensure Superman's ultimate sacrifice was not in vain, Bruce Wayne aligns forces with Diana Prince with plans to recruit a team of metahumans to protect the world from an approaching threat of catastrophic proportions.