The story of two communist friends, one of whom leaves as secretary to the district committee of the Communist Party of Czechoslovakia and the other remains in the village as a party agitator.

16-year-old Hanka is experiencing the turmoil of first love. She loves college student Pavel Horák, but she cannot get close to him. Pavel is also attracted to the serious girl, but he is also shy and timid. That is why every meeting between them ends in mutual disappointment, insecurity and a feeling of threat…

Czechoslovak counter-espionage intercepts a coded message from the West German secret service ordering death for an unknown person on Czech territory.

The rude and bitter mining engineer Štěrba strongly opposes the proposal of his colleague Ing. Vochoče to reopen mining in the old mine. Vochoč's plan is precisely prepared and could solve many problems. However, Štěrba does not want to explain anything to anyone, he does not want to talk to anyone, his only refuge is the pub and his only friend is a glass of alcohol. He has resigned himself to a relationship with his wife. No one knows that he has very good reasons to prevent Vochoč and the others from taking their meritorious initiative...

A young, unmarried woman finds herself a "little bit pregnant" and she tries to hide this fact from her mother but it isn't long before the truth is obvious.