During the twenty years school reunion classmates suddenly learn that one of them - Nadezhda Kruglova - is a proud mother of ten children.
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.
The orphanage's pupils are sent by the district Komsomol committee to eliminate illiteracy in the remote village of Penki.
