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.

A military detachment arrived in the village to the landowner Shpak and the young officer fell in love with the owner's daughter. Sly soldier Shelmenko helps lovers get married.

Eugene Onegin, a jaded young dandy from the big city of St. Petersburg, travels to the country to ingratiate himself into the affection of a dying uncle. There he meets the idealistic and romantic poet Vladimir Lensky, who introduces him to the daughters of a local landowner.

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.

Renowned scientist Dronov works in Novosibirsk on the creation of ultra-modern engine. He has a bad heart, he was afraid not to have time to finish the job, and test engine at a factory in Moscow, unfortunately, is not the first time passes unsuccessfully. Dronov abandons the rest of the work, even the leadership of the Institute entrusts to his disciple Morozov.

The story of a sublime unrequited love of a petty official for a young socialite.