1918. After the death of their mother, the father decides to take the children to Moscow to visit a distant relative. On the way, the children experience a raid by a White Guard gang on the train, the death of their father, and meet a street child named Yashka, who is bringing Lenin a plan on how to destroy all the bourgeoisie and the entire counter-revolution in one day. The boys are introduced to revolutionary events, and ahead lies Moscow, a chance meeting and conversation with Lenin and Dzerzhinsky, the fight against the counter-revolution...
