When Richard Riddick (Vin Diesel) is left for dead on a sun-drenched planet, he has to face nasty alien creatures and mercenaries who have a bounty on his head in two international TV spots for Riddick. David Twohy directs this sequel which features some familiar faces (Karl Urban as Vaako) and new additions (Katee Sackhoff as Dahl) in this sci-fi action sequel, debuting in theaters September 6.