During a routine traffic stop, the police discovers the body of a girl in the trunk of a truck. Since the dead girl spent the night before with the driver of the car, he becomes the prime suspect. In the course of the trial uncomfortable truths surface.
The main characters are the same two quarreling peasant families introduced in "Sami swoi" (Our Folks). The action of the film starts 18 years later. The old quarrels have been forgotten, but new problems keep popping up. They have no successors to inherit the farms. They invent a tricky and clever plan. The young granddaughter is to take over both of the farms after her marriage. Both Kargul and Pawlak have no rest until they carry out the plan. In the end, after numerous adventures and obstacles their cunning intrigue is fulfilled - the young marry and the land remains in the family's hands.
When Stanislaw Czermien is wrongfully accused of rape and murder, he decides to exonerate himself and track down the real perpetrator. He suspects him to be his own brother, Witold.
Police captain Wójcik conducts an investigation into the murder of a cashier from a state-owned enterprise. Despite seemingly numerous leads, the investigation gets stuck in a dead end – the victim had no enemies and nothing was stolen. Despite closing the case Wójcik feels that the key to solving the mystery is the murdered cashier and his past. Exploring this plot, he discovers a full-fledged spy affair, however, trying to catch the real murderer, he’ll have to risk his life, health and career.
