When Mongul recruits Jonah Hex to bring new gladiators to War World, the Old West bounty hunter wrangles the Dark Knight. After a change of heart, Hex and Batman team up to take down the violent empire.

The all-American fighting machine OMAC is pitted against the equally destructive Shrapnel in a chaotic fight to the finish, but the architect behind the battle is the mysterious, balance-obsessed villain Libra.