About the forestry scientist Ivan Vikhrov, who devoted his life to the forest and the fight against the fact that “forestry is turning into ordinary forest management.”
Several major robberies take place in Leningrad and the region, but the criminal leaves no trace. The Inurkollegia announces that the administrator of the boarding house "Otdykh" Balyasin unexpectedly receives a large sum of money as an inheritance, and the police decide to set a trap for the criminal, believing that he will not pass by such money. An employee of the Criminal Investigation Department arrives at the boarding house, and it soon becomes clear that the elusive criminal is one of the vacationers at the boarding house.
Two old Leningrad workers, Sukhov and Solyanov, have a long-standing friendship — they worked at the same plant, lived in the neighborhood. Now Solyanov, at the insistence of his son, decides to retire. But it is not so easy to part with his native plant, which, as it turned out, still needs an old personnel officer...