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.
Joanna, the daughter of quite wealthy traders from the Różycki bazaar, is in love with Andrzej, a young, talented, but poor painter. However, the girl's father, Kazimierz Burczyk, decides to find a suitable husband for her himself. A shrewd tradesman, unwilling to disclose his income, searches...
A young doctor receives an allotment for a state-owned M-3 type flat, but to his disfortune only married couples have a right to an M-3, so he begins a frantic search for a wife.
One man, a brave paratrooper, has a problem with a sore tooth, but is afraid to go to the dentist. He is brought to him by his several-year-old son. In the office, apart from the dentist, a plush toy awaits him - "Checkered dog", which the man remembers from his childhood. The doctor, by playing...