En Tokio, un periodista (Raymond Burr) estadounidense cuenta la historia de un dinosaurio gigante que sale del mar luego de un ataque nuclear.
During World War II, an American bomber pilot is rescued after drifting at sea aboard a raft. After being administered truth serum, he tells the doctor a story of how he and the three survivors of his plane crash washed up on an island that was inhabited by a tribe of beautiful primitive cave-women, dinosaurs and a group of savage cavemen who are bent on abducting the women for breeding purposes.
A nightclub operator (Mara Corday), her sister (Barbara Bostock), a beautician (Lita Milan) and two other women rob a payroll.