Vin Diesel reprises his role as hunted fugitive Riddick, his anti-hero character from cult movie Pitch Black. Riddick is on the run. Escaping from mercenaries determined to collect the price on his head, he finds himself at the heart of a battle that is not his. With Necromonger conquerors threatening the future of the entire universe, Riddick could be the only unlikely hero to save the human race. But will he be interested in saving anything other than his own life?