Country girl Pepina sometimes misses her boyfriend Ferd. He works for the detective company "Bdělá soůva" in Prague. Pepina takes the opportunity to visit Ferd when the filmmakers offer her to go with them. However, they accidentally run her over on the outskirts of Prague. Pepina is unfamiliar with Prague and just by chance gets lost in the theater where Ferd is on duty...

A tabloid newspaper reporter overhears a conversation about murder between the owner of a shooting range and his niece Slávka, an avid reader of detective stories. The evidence in the case was underwear with monogram I.K. Professor Sedláček returns from Paris. His wife welcomes him fondly but when she discovers his travelling case is full of ladies' underwear, the idyll is over. But she does not want to get divorced because she loves her husband still. She just wants to punish him adequately. On the advice of a lawyer she decides to arouse his jealousy by flirting with other men.

Silvestr Blažek loses his job, but he doesn't lose heart. He also courts the saleswoman Boženka Straková. The driver of the builder Herold, Karel Verner, is also interested in the girl. Boženka is the daughter of Narcis Straka, a man with a mysterious past. However, Herold's father-in-law Jakub Suldovský recognizes him as an old friend from Vienna, where they both loved the same woman....

The history and present of Czech glass and its use in various fields of human activity.

A teacher is handing out examination results to his students in an industrial school and he points out to them that work is the most important thing in a person's life. Karel is pleased with his results but Vláďa's are bad. During the holidays Karel goes off to a factory to get work experience. Vláďa prefers to laze about and read poetry. In the end, however, he decides to follow Karel's example. At first the work doesn't agree with him, but after a few days, he gets used to it and finally he is glad to be able to work in the factory. One day he is injured at work and in hospital he has time to think about his future. He tells Karel, who visits him in hospital, that he has decided not to carry on with studies which don't interest him. He feels he will be more useful if he stays on at the factory.

Advertisement for Krása Shoes, taking inspiration from Cinderella.