A naive innkeeper arrives from the Alps into town to investigate his shady investor only to discover that he owns a sex shop. Needing money for a good cause, he and his sons join in. However, his partner is actually a diamond smuggler.
Five sexy females from the planet Venus are sent to Earth to bring back sperm samples to their planet, which is dying out because there are no men left on it. After the land they find that it's not all that difficult persuading Earthmen to help them in their quest.