The action takes place in the late 1940s. A large-scale land-surveying research is underway in a remote area of Eastern Siberia. The work had almost been concluded when a wire arrives with the news of people disappearing in the locality of Yambuy. The expedition’s chief and radioman decide to go in search of the lost ones. The local Evenk hunters come to their aid. Many dangerous adventures lie in store for these daring people before they find the culprit – a man-eating bear.

1947 ... The Savchenko family returns to Moscow from evacuation - husband and wife with Kostya's little son. They settle with Grandma Kostya in a huge communal apartment. Street meets the boy with a flock of local boys. Then there were: the division of the territory with the "Sretensky"; trophy movie “Girl of my dreams”; a school with separate education, camp discipline and essays about the border guard Karatsyup. And the monetary reform of 1947, when all of their savings depreciated in an instant, and the boys let out boats from banknotes in puddles.