With reference to little scientific theses, sexual rituals and preferences around the world are shown.

London, England. Mike, a fifteen-year-old boy, gets a job in a bathhouse, where he meets Susan, an attractive young woman who works there as an attendant.

Graf Porno is a real playboy who makes money out of everything that falls into his hands. During great sex parties he puts his girls on and afterwards everything that is not nailed down is missing. Harry Holst, on the other hand, is a young man who has successfully completed a correspondence course as a private detective and is now waiting for clients...waiting and waiting.

A group of tourists on the flight back home remembers on their sexual adventures they had in several nightclubs at their vacation in Bangkok.

By accident, Mike gets the deal of his life. A rich managing director instructs him to seduce his unfaithful wife to give him a reason for divorce.

Melanie, a nineteen year old girl, is starting to attend a noble Hostess school. Or at least, that's what she believes. But the truth is, she ends up with other girls in a nightclub and works as a prostitute. When her father finds out, him and her two brothers are trying to get her out of there.

Willibald, a lovable good-for-nothing whose hobby is cross-dressing, is housed in the apartment of five pretty girls who provide him with board and lodging under the comforter in return for his zeal. But when one night they catch him in flagrante delicto with a new conquest, he is kicked out of the apartment after a thorough thrashing.

After a French prostitute is found dead, one of her regular clients is tried and convicted for her murder. He is eventually sentenced to death but dies in a high speed pursuit after attempting to escape custody. Soon, the witnesses that testified against him end up being systematically murdered by a mysterious killer wearing black gloves.

Garibaldus lives in the family inherited castle, but with the finances he has problems. To solve their financial problems, he wants to marry his son to a rich girl.