On the advice of a friend, Claude, married to the charming Isabelle and father of two, decided to transform his library, hardly flourishing, into a sex shop. This change of activity proves to be very lucrative and sharpens his desire to spice up his married life through various erotic experiences. Claude asks his wife to share with him the audacity he dreams of. Soon, the household meets a dentist and his wife and is engaged, without much success, to new discoveries. Isabelle, full of good will, tries to follow her husband ...

Jean-Paul Belmondo plays Paul, a former womanizer who marries the head of the medical department's "unattractive" daughter Christine because he thinks attractive women can't be trusted and make poor wives. A car accident leaves him bedridden and he begins to miss his playboy days, when Christine's bombshell sister Martine arrives and Paul decides he must have her. He begins drugging Christine at night so he can sneak out to kill of Martine's many suitors one by one.

Rolf (Michael Cromer), a sex-advice columnist and a lecher, has affairs with numerous women, but never a permanent relationship. Suzanne, one of his ex-lovers, offers to bet that no woman can get Rolf to propose marriage, a bet her girlfriend Andrea (Sybil Danning) eagerly accepts. But there's a catch: To win the bet, Andrea must get the womanizing Rolf to commit to marriage without first going to bed with him.

A sixteen-year-old girl is selected by a matchmaking computer to become the wife of a 35-year-old star photographer.