L.P.A. Flight 820, a Concorde test flight, is sabotaged which forces the plane to crash land in the ocean off coast of Martinique in the French Antillies of the Caribbean. The only survivor is a Jean Beneyton (Mimsy Farmer), a French hostess on the flight. Two fishermen find her, but then are soon killed off by a group of suited corporate agents who ride out in a speedboat, because they were witnesses to the crash.