When an atomic war on Mars destroys the planet's women, it's up to Martian Princess Marcuzan and her right-hand man Dr. Nadir to travel to earth and kidnap women for new breeding stock. Landing in Puerto Rico, they shoot down a NASA space capsule manned by an android. With his electronic brain damaged, the android terrorizes the island while the Martians raid beaches and pool parties
| Actor | Role |
|---|---|
 Marilyn HanoldPrincess Marcuzan | Princess Marcuzan |
 James KarenDr. Steele | Dr. Steele |
 Lou CutellDr. Nadir | Dr. Nadir |
| NNancy MarshallKaren Grant | Karen Grant |
| DDavid KermanGeneral Bowens | General Bowens |
| RRobert ReillyCol. Frank Saunders / Frankenstein | Col. Frank Saunders / Frankenstein |
| RRobert Alan BrowneMartian Crewmember (uncredited) | Martian Crewmember (uncredited) |
 Robert FieldsReporter (uncredited) | Reporter (uncredited) |
 Bruce GloverMartian Crewmember / The Monster (uncredited) | Martian Crewmember / The Monster (uncredited) |