Underwater oceanographer Harry Marsham survives when his yacht is rammed one night in the Caribbean by a ship without lights. This unexpected event draws Marsham unwittingly into a desperate battle to expose the evil plans of the terrorist, Hakeem Khan, who is preparing to attack the soft underbelly of America, turning the Gulf of Mexico and the eastern seaboard of the United States into a wasteland.Drawn into this violent world is Marsham's associate, Helen, and together they are sucked into a murderous mixture of kidnap, Caribbean voodoo, nuclear weapons and the secret world of the C.I.A. Marsham is forced to work with Khan knowing that the penalty for his own failure will be death. Now America's security forces face a race against time to stop Khan destroying millions of lives.