OMAC robots are rampaging, magic is dying, villains are uniting, and a war is raging in space. And in the middle of it all, a critical moment has divided Earth's three greatest heroes: Superman, Batman, and Wonder Woman. It's the DC Universe's darkest day, and long-lost heroes from the past have returned to make things right in the universe... at any cost. Heroes will live, heroes will die, and the DCU will never be the same again!

This omnibus collects:

• Action Comics #826, #829,
• Adventures of Superman #639, #642,
• Countdown to Infinite Crisis, Day of Vengeance #1-6,
• Day of Vengeance Infinite Crisis Special,
• JLA #115-119,
• Infinite Crisis #1-6,
• Infinite Crisis Secret Files 2006,
• The OMAC Project #1-6,
• The OMAC Project Infinite Crisis Special,
• Rann-Thanagar War #1-6,
• The Rann-Thanagar Infinite Crisis Special,
• Superman #216, #219,
• Villains United #1-6,
• Villains United Infinite Crisis Special,
• Wonder Woman #219.