Nyah (Patricia Laffan) is a commander from Mars who is part of an alien team looking for Earth men to replenish the male population of her planet. Her space saucer is damaged when entering Earth's atmosphere, and she is forced to land in the remote Scottish moors. On Mars, the freedom of women led to open warfare between the sexes. The females won, but their victory lead to the sexual impotence of the planet's entire male population. So, Nyah spends her time in a Scottish bar where she makes threats toward the local women to give up their men. Nyah entices one of the town's men aboard her ship, Professor Hennessy (Joseph Tomelty), but the professor suggests that one of the other men at the inn volunteer to go back with her to Mars. A selfless volunteer agrees to go, with the intention of sabotaging the Devil Girl's spacecraft after takeoff. Will his plan work and save the rest of the Earth's male population? Watch this crazy science fiction film to see what happens to Nyah's evil plans. This is a superb British cult film you can't afford to miss!