Black Canary convinces Green Arrow to help save her mentor, Wildcat, from his involvement in an underground, super-powered fight club known as MetaBrawl.

Mister Miracle and Big Barda solicit Justice League assistance to free Oberon from Apokolips. J'onn refuses, but Flash decides to help out on his own.

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.

Seeking to avenge the death of her parents, the Huntress enlists the help of the Question in tracking down Steven Mandragora, a mobster in protective custody -- and being guarded by the Green Arrow and Black Canary.

Captain Marvel joins the Justice League and his innocent presence inadvertently causes friction with Superman.

Shayera, Vixen and Vigilante are lured into an ambush by Thanagarians seeking revenge.

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.