Galactic condemnable Riddick is on the run, with premium hunter on his tail. He receive counsel from Aereon, embassador from the Elemental race, who inform him that a warrior regular army know as the Necromongers is eliminate all human life in the galaxy in a bid for cosmopolitan laterality. The wise Aereon urge Riddick into conflict, believe he is the one man who can get the better of the Necromongers and their leader, the evil Godhead marshall