Family drama centering on the childhood of Vladimir Lenin, then Vladimir Ilich Ulyanov, in the city of Simbirsk, and his relationship with his mother.

Olga is a doctor of an ambulance crew - she is a sincere, straightforward and warm-hearted woman who has firm views on human relationships, medical duties, friendship and love. When Olga falls in love with doctor Aleksandr Tennov, she expects him to share the same views with her.

In the summer of 1917, Vladimir Lenin leaves Petrograd and shelters in Razliv with fellow revolutionary Grigory Zinoviev. In the weeks that follow, Lenin writes his famous "Blue Notebook" advocating proletarian revolution.