Plot: A group of elite warriors are hunted by members of a merciless alien race known as Predators. Adrien Brody stars as Royce, a mercenary who reluctantly leads a group of elite warriors who come to realize they've been brought together on an alien planet... as prey. With the notable exception of a disgraced physician, they are all cold-blooded killers - mercenaries, Yakuza, convicts, death squad members - human "predators" that are now being systemically hunted and eliminated by a new breed of alien Predators.

Source#1: Watch Predators (2010) Online-full