As the final battle erupts between Batman and Robin at the heart of Lazarus Island, a strange tremor rocks the combatants to their senses... This isn't an island at all--it's a volcano! With the Devil Nezha pulling the strings and unbelievable transformative power about to explode out into the world, our heroes have no choice but to do the unthinkable--fall back! A battle between father and son goes global as the Earth enters into the Lazarus Planet.