One of Fox Motion Picture's scariest monsters in regards to the ability to hunt and kill human prey. The story begins when several individuals find themselves on a alien planet, each one the most aggressive and destructive aspects of human nature found on Earth. Early on they begin to realize that they are not on their home planet, because of discovering certain details. Not knowing they are being watched by a mechanical bird sentry the group pushes on to learn the lay of the land. Without warning they encounter alien dogs that were set loose to flush them out into the open.
After a while the group begins to investigate another part of the jungle, only to find a chamber of horrors. An alien tied to a ceremonial post with human skulls all over, they discover nearly too late that it was a trap. The group flees elsewhere away from the jungle and into some mountainous terrain. Discovering old excavation machinery lying abandoned they go inside to get out of a rain storm, finding out they are not alone. They encounter a human survivor of seven previous hunts, however, the motive for letting them into the old excavator are less then noble.
The hunters return with a vengeance ready to kill every human standing for their trophies. After a massive firefight in the mountain quarry only a few are left still alive, only to be picked off on the way to the landing site of a spaceship. One man who was taken for this hunt turns out to be a serial killer and finally shows his true face. Not only did the killer die, but the two remaining survivors are caught up in an ancient blood feud of the predators. The two people that remained take a last stand against the hunters and survive, but then they see more parachutes falling with more prey.