
Sasha Belyi meets his army friend Farhad, who has become a crime boss in his homeland. Farhad offers an army friend a joint business, White agrees. Kaverin is expelled from the authorities, and Artur is forced to go abroad. At the same time, a coup d'etat begins in the country.
Sergeant of the border troops of the KGB of the USSR Aleksandr Belov (Sasha Belyy), who is serving on the border with Afghanistan, is transferred to the reserve and returns home to Moscow. He is greeted by three faithful childhood friends - the eccentric major and the son of a professor of astrophysics Kosmos Kholmogorov (Kos), the cunning and enterprising Viktor Pchyolkin (Pchela) and the calm athlete Valeriy Filatov (Fil).
After defeating Mukha, Aleksandr Belov continues to live away from crime, and still plans to enter the Mining Institute. He also goes to buy a dog for himself, during the purchase of which he meets the famous stuntman and film actor Aleksandr Inshakov. Sasha does not suspect that he was on the list of Kaverin's personal enemies. Toiling from idleness, Sasha pays attention to the neighboring house, where the young violinist Olga Surikova is preparing for a performance. Sasha falls in love with her.