JUSTICE GETS AN UPGRADE! The age of the superhero ended after World War II, when an invasion from Darkseid and his parademons ushered in the age of the mech. The world has stockpiled colossal battle suits piloted by elite warriors waiting for another invasion, and it's finally here. The Earth's greatest mech pilots—Batman, The Flash, the Green Lanterns, Wonder Woman, and the last son of a dying world named Kal-El—must suit up and join forces.