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...

The family of the worker Kučera lives happily. His daughter Anežka, engaged to technical draftsman Adolf, is a seamstress. His son Váš is studying to be a machinist. The family also includes his grandfather, a former miner. However, an economic crisis is beginning. Factories stop production. Adolf loses his job and has an argument with Anežka, who has no idea the cause of his nervousness.

Karla, a bar dancer, shoots her lover Mayer during a break-up. She hides from the police in pianist Pavel Ryant's apartment and promises to return when she leaves. The next day, however, Karla is arrested and convicted. In the penitentiary she meets the warden, Angelika, a nun who is very much like her. She begs Angelika to lend her clothes for a few days and leaves the prison as a nun.