Olga Bringmann

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.

Georg Wilsberg is an antiquarian in Münster. He used to be a lawyer but lost his license. Since then he has been working as a private detective. The always clammy Wilsberg urgently needs this income. In addition, he depends on the support of his friends, especially because of the car.