Speaking of reality, the Adjudicator, a being who lives beyond the Multiverse, has determined that the Extremists' homeworld of Angor must remain dead. Batman and Black Canary have different ideas about that, and partner with former foes Dreamslayer and Lord Havok to alter reality or die trying! All of this is prelude to the team's final mission, as the JLA must stop the time thief Chronos from killing Ahl, the god of superheroes, preventing him from seeding Earth with the concept of the hero. If the team fails, they all will cease to exist, leaving Earth vulnerable to all manner of evil.