Sergei Dolganov is a jack of all trades, a man of great soul and open heart. He wanders around weighing cities in search of happiness, and in all the cities where he visits, he builds fountains not for extra money, but only for beauty, in order to bring joy to himself and people. One day, fate brings him to the steppe state farm, where he meets a wonderful girl. Sergei understands that she is the one and only. But only the girl already has a gentleman, and in order to win her love, Sergei needs to try very hard.

The investigation of a complex, complicated case of the murder of an engineer, a former prisoner of a Nazi concentration camp. The criminal, one of the executioners of this camp, did not escape retribution.