Left for dead on a sun-scorched planet, Riddick finds himself up against an alien race of predators. Activating an emergency beacon alerts two ships: one carrying a new breed of mercenary, the other captained by a man from Riddick...

Richard Bruno Riddick (Vin Diesel), now a hunted man, finds himself in the middle of two opposing forces in a major crusade. Lord Marshal (Colm Feore) is a warrior priest who is the leader of a sect that is waging the tenth and perhaps final crusade five hundred years in the future. Aereon (Dame Judi Dench) is an ambassador from the Elemental race. She is an ethereal being who helps Riddick unearth his origins.