It's finally here, the battle to end them all, as the fate of the cosmos hangs in the balance! In one corner - the devourer of worlds, Galactus, AND HIS NEW HERALD, ALIEN ZARAB! In the other, the assembled forces of Captain America's Avengers and Ultraman's Ultra Guard! But can our heroes really hope to take on such an apocalyptic threat…and even if they can, what consequences might that have for multiple universes?