The famous singer Roberto Ricci wants to save himself from his overly intrusive female fans with a fake marriage. Mr. Praxl from the marriage institute Eros finds him his own granddaughter Gertie, who works as a waitress and wants to finance her own singing and dancing career with the fee for the role of his wife. To comply with Mr. Ricci's wishes, the attractive Gertie disguises herself as a wallflower with her hair pinned up and high-necked dresses. The act has the desired effect on Roberto's female followers. Over time, however, Gertie and Roberto actually fall in love with each other, which sparks the jealousy of Roberto's stage partner Loretta. With the help of Füllkrug, she tries to thwart the budding romance.

The young musician Ralph Osterwalder, born in Bern in 1922, is tired of working in a big band. He dreams of a small, flexible ensemble. In 1944, he founded his own combo in a hotel room. In 1949, fierce disputes arose. The newly founded Hazy Osterwald Sextet, featuring Sunny Lang, Dennis Armitage, Curti Prina, Werner Dies, and Johnny Ward, soon made international music history. Fast-paced, catchy music, interspersed with humorous show interludes, became the band's unmistakable trademark.

In the forest of Hablikon, the administrator Reichle is found shot dead. He had gone hunting with three other respected citizens of the community. Detective Sergeant Müller takes charge of the investigation. The first suspect is the nephew of one of the hunters, who was also at the scene at the time of the shooting and was on parole from prison. With no clear motive, Müller focuses his attention on the honorable and irreproachable fellow hunters. Their clean facade begins to crumble during his investigations. Village doctor Amsler, banker Meier, and architect Häuptl all had something to hide. Reichle knew about their private and business misdeeds. Müller also learns from Alvine Dünki, the dead man's lover, that money from the community coffers was used for the four men's entertainment. The murderer is convicted after the crime is reconstructed.