Lyudmila Kutselai

The film takes place in Moscow in 1925, during the New Economic Policy (NEP). The three main characters - Misha, Genka, and Slava - have grown up and become Komsomol members. A murder occurs in their courtyard: engineer Zimin is shot dead at night. The prime suspect turns out to be a local hooligan. But Misha refuses to believe him completely and tries to find evidence on his own.

This is a last of 3 movies about 3 friends (the other two are "Kortik" and "Bronzovaya Ptitsa"). The gang has grown up and in this movie they discover and help to stop criminal activity on the factory and in their neighborhood.