Five sexy females from the planet Venus are sent to Earth to bring back sperm samples to their planet. In Bavaria they use machines to extract the samples from resisting males but soon learn that sex is an easier way to get what they want.
A West German man, mistaken by the police for a left wing terrorist, hides in Vienna with a prostitute and her incestuous teen daughter. They become both a threesome and a happy surrogate family, but nothing lasts forever.
