An aviation colonel comes to the Western Urals, to a large village of industrial importance. He remembers running here as a barefoot boy with his friend in the early 1930s. Then there was only a small crossing and a small village. About how they lived and studied here, how they became active builders of a new life, how they dreamed of seeing different countries, how they bravely fought the Nazis far from their homeland.
In the first days of the Second World War, a young woman with three children is evacuated from the front-line zone to the Urals. After some time, she receives a funeral for her husband. But she has her little sons with her. The eldest son Kolya becomes a reliable assistant to his mother.
The film tells about the childhood and youth of the wife, friend and military ally of the founder of the country of the Soviets Nadezhda Konstantinovna Krupskaya. The main attention in the film is paid to the participation of a young revolutionary in the organization of the struggle of the workers of St. Petersburg for their rights, against the autocracy.
Twelve graduates of the tenth "A" arrive to the virgin lands. Freed from childhood illusions, yesterday's schoolchildren get used to the unsettled life, to hard work on combines, tractors, on the threshing floor. Soon other difficulties are discovered.
