A manned space flight crash lands on what the astronauts believe to be an unknown asteroid. Their expectations of survival or rescue are bleak. Only four of the crew survive, one of whom is barely alive. After he dies, the three remaining men, Corey (Dewey Martin), Donlin (Edward Burns), and Pierson (Ted Otis) decide to trek out into the barren desert to see if there is anything that might improve their chances of survival. When Corey and Donlin reconvene, it seems that Pierson is dead and Corey filched the water supply from his dead body. Donlin, the commanding officer, forces Corey at gunpoint to lead him to Pierson's body.