Le film raconte l'enfance et la jeunesse de l'épouse, amie et alliée militaire du fondateur du pays des Soviets, Nadejda Konstantinovna Kroupskaïa. L'attention principale du film est portée sur la participation de la jeune révolutionnaire à l'organisation de la lutte des ouvriers de Saint-Pétersbourg pour leurs droits, contre l'autocratie.
The young girl made a mistake. As a result, she has son from a soldier, who immediately broke up with her. She gives away her child to a wealthy family, but years later realizes that the child is the most valuable thing in her life. To be with him, poor woman applies for a job to this family.