After the demise of the ruthless reptilian desperado Redeye in OBLIVION part one, the wildest western town in the galaxy has returned to its version of a normal routine.

The peace is short-lived, though, as a notoriously vicious, yet charming , bounty hunter named Sweeney arrives in Oblivion to extricate a female outlaw charged with heinous crimes against the government of Galaxicorp. Everyone assumes he must be looking for Lash, the now-deceased Redeye's ex-partner-in-passion. Meanwhile, Lash discovers a huge mine filled with the rarest and most expensive mineral in the universe, and strikes a dangerous deal with the evil warlord Jagger to share the riches and power.

Down in the mines the battle for Oblivion begins with the awakening of a massive creature....a new and deadly participant in the incredible final showdown between Cowboys and Aliens.