During a supersonic test flight, the Concorde crashes near the island of Martinique. An air hostess is picked up as the only survivor by two fishermen. The girl disappears without a trace and the fishermen are killed in a mysterious accident. Newspaper reporter Moses Brody becomes suspicious. He decides to look into the case and discovers the Concorde has been sabotaged and the gangsters are planning a second assault - this time the target is another Concorde carrying a large number of passengers