Darkness descends, alliances are tested, and legendary heroes unite in the latest thrilling chapter of Batman/Superman: World's Finest! Eclipso rises, threatening to engulf the world in eternal darkness, and even the combined might of Batman and Superman may not be enough to stop him! As the Justice League faces its breaking point, the battle for Earth's yellow sun becomes the key to victory! Meanwhile, chaos erupts when the Super-Pets go rogue, leading to an unlikely team-up between Batgirl and Jimmy Olsen to save the day. Plus, Green Lantern and Green Arrow reunite for a high-stakes mission against the deadly Deathstroke in a special one-shot adventure! Collects Superman/Batman: World's Finest #31-34 and Green Lantern/Green Arrow: World's Finest Special #1.