The Planet of Spermula is about to be destroyed, so the Spermulites travel to Earth. Their intentions are to take over the male species by taking on the form of the stronger females, and rallying females to their side. But can they withstand the strong human sexual urges?

One of the Spermulites didn't transform as planned... Instead of a beautiful woman, he became a beautiful man, Werner (played by Udo Kier). He likes being a man, except for one problem. His penis is only one centimeter long.

The spermulites are cynics who hate this disgusting love and sex thing that Earthpeople like so much. But some of the spermulites actually start enjoying themselves and think that maybe love and sex aren't as disgusting as they thought.