The owner of an ice cream parlor in a coastal town is murdered. The investigation is conducted by platoon leader Rogowski, but soon he is joined by Lieutenant Joanna Szczęsna from the voivodeship headquarters.

There has been a secret relationship between the nephew of the ordinate - Jan, and his older cousin Xymena. However, Jan falls in love with the foster daughter of the ordinate, the young Krystyna. The ordinate does not consent to marriage, because Krystyna is his illegitimate daughter, and thus Jan's cousin. But it turns out that Jan is not the son of the general's brother ...

A group of juvenile delinquents working in a shipyard try to clear themselves of a false accusation.

A group of boys in pre-war Warsaw fight for the right to train at an abandoned square.