A NEW DANGER TO THE DCU FORCES A BATMAN & LEX LUTHOR TEAM-UP! The Justice League has offered a number of villains amnesty, allowing them to prove they're on the side of the angels. But what they didn't see coming was the void that would leave in the world of super-villains! Batman and Lex Luthor must work together to investigate a Justice League villain who wants to fill that void, capitalizing on shifting priorities and the visions of the future that the DC Universe's champions saw at the end of DC K.O. to create a dangerous new weapon! Can Batman and Lex set aside their differences to stop them? This crucial issue in the All In Saga sets up new threats for the Justice League's heroes and villains!