When workers begin disappearing in a South African mine, Dr. Straker and a search team are sent into the desert to find out why the geologists of a diamond expedition have lost radio contact. They arrive at camp of the scientists in the desert, but soon find the neatly gnawed bones of their colleagues and a trail that leads them to a strange rock formation. Once at camp they find only the cleanly gnawed bones of the workers. Soon it becomes clear that there is a murderous beast on the loose.