A marine biologist heads for Port Amanzi in Africa after his friend, Mark DeSantis, is supposedly a victim of a fatal shark attack. DeSantis had been conducting research on a series of shark attacks in the area prior to his death and now his friend, along with DeSantis' sister, takes up the research and finds that the sharks may not be the only threat in Port Amanzi.

A young inductee into the military is given the task of looking after some chimpanzees used in the mysterious "Project X". Getting to know the chimps fairly well, he begins to suspect there is more to the secret project than he is being told.