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.

Natalya Belokhvostikova
as Nadezhda Konstantinovna Krupskaya

Andrey Myagkov
as Vladimir Ilyich Lenin

Danuta Stolyarskaya
as Yelizaveta Vasilyevna Krupskaya

Igor Ozerov
as Konstantin Ignatyevich Krupsky

Mikhail Nozhkin
as Gleb Krzhizhanovsky

Oleg Golubitsky
as Boris Andreyevich

Anna Tvelenyova
as Zinaida Nevzorova

Tatyana Derbenyova
as Sofya Nevzorova

Vera Donskaya
as Aleksandra Grigoryeva

Liliya Zakharova
as Sashenka Grigoryeva