Collecting two chapters of the explosive storyline the SUPERMAN books have been building to since 2008! How can Superman stop the two worlds he loves from destroying each other? General Zod has been waiting for another shot at Earth for years, and with 100,000 supermen on his side, it looks like it's his war to win! Then, as Zod's army gets closer to Earth, the battlefield shifts to Mars where Superman must confront Supergirl! Plus: Superboy knows what he must do to stop this war – even if it means being hated by both planets!