Mrs Schruppatelli's new birdhouse offends the neighbours because of its size. They complain to the municipality. Elvira Iseli comes to her friend's aid in her dispute with the authorities. However, the path through the institutions proves to be much longer and more complicated than expected.

Mrs Iseli follows in the footsteps of Miss Marple! A valuable piece of jewellery disappears from the castle where Mrs Schruppatelli is employed as a cook. She calls Elvira Iseli for help and she takes up the case. With her unconventional instincts, she brings the case to an unexpected conclusion in a thrilling series of surprising revelations.

Elvira Iseli actually just wanted to pop in to see her twin sister Dorothée, who runs a hairdressing salon. But Dorothée asks her to look after the shop quickly because she has to deliver a parcel to the post office. It's amazing what can happen in a very short space of time when you look after a shop. It's even more amazing what can happen when you're just delivering a parcel to the post office. A turbulent series of entanglements that really gets the twin sisters Iseli spinning. Now only Mrs Schruppatelli can help.

Elvira Iseli and Mrs Schruppatelli visit her old uncle, a mountain farmer who has fallen on hard times. Elvira Iseli develops a plan to help him. She wants to show foreign tourists typical Swiss mountain dwellers. To fulfil her bold promises, however, she has to dig deep into her bag of tricks. Mrs Schruppatelli and the Pfund family are also assigned extremely unusual tasks.