A young student stands to inherent a fortune provided he can pass his first semester of college and find a steady girlfriend. His scheming stepfather has other plans for the money, however.

While his lover is sleeping, a man assembles around her a Rube Goldberg collection of malevolent-looking implements. Then he leaves and lights the fuse . . .

Dr. Kurt Weimar, a busy divorce lawyer and ladies' darling, has successfully divorced the well-known chanson singer Ramona. As a thank you, she offers him her luxurious country house on Lake Wörthersee for a weekend. So it happens that – unbeknownst to each other – Dr. Kurt Weimar, his attractive colleague Dr. Bettina Hofer, his fun-loving father, his latest flame, her jealous husband, Kurt's cheerful secretary Piffi, and his girlfriend Rita all gather for a cozy weekend at the lakeside villa. The finale at Ramona's house, where they inevitably meet, turns into a furious showdown.