Superman battles Doomsday in the heart of a volcano. Doomsday is revealed to be a modified clone of Superman. Batman probes the Cadmus conspiracy to destroy the Justice League.

Cadmus has recruited a team of supervillains named Task Force X (based on the comics' Suicide Squad) made up of Deadshot, Plastique, Captain Boomerang, and the Clock King. Their mission: steal the Annihilator armor from the Watchtower.

The Question, fearing disaster, decides to kill Lex Luthor to avert it.

Lex Luthor executes his masterstroke to eliminate Project Cadmus and frame the Justice League.

While the senior Leaguers struggle to respond to the mysterious main gun firing, Amanda Waller orders Galatea to lead a full attack on the Justice League.

The Justice League charter members must battle the combined Lex Luthor/Brainiac menace alone.

In the future, Terry McGinnis learns the truth about his birth.

Green Arrow must lead a team of non-powered superheroes against a berserk super-soldier attacking Metropolis.