When an unexpected and ruthless adversary strikes too close to home, Kara Zor-El, aka Supergirl, reluctantly joins forces with an unlikely companion on an epic, interstellar journey of vengeance and justice.

Superman must reconcile his alien Kryptonian heritage with his human upbringing as reporter Clark Kent. As the embodiment of truth, justice and the human way he soon finds himself in a world that views these as old-fashioned.