A film about the Ural accordion player I. N. Kostyaev. Ural. The village of Mekhonka. Summer and winter landscapes of the environs of the village, forests. Lumberjacks work in the forest. IN Kostyaev (pensioner, former agronomist, participant of the First World War) tells children about the history of his accordion (synchronously), plays with it, plants trees in an apple orchard with children; reads and writes letters, plays the accordion for young people, lumberjacks. Girls and boys are dancing. Family photographs on the wall of a room in the house of I. N. Kostyaev. Chronicle of the period of the First World War. Fighting infantry, artillery on one of the fronts of the war. Mobilization in Russia. Troop movement. Soldiers chopping wood in the forest (no location). France. City of Paris. Residents of the city are greeting Russian soldiers.