
Having broken the drug deal, Kaverin begins to play a double game against Belov. After the murder of Farhad, he brings money and drugs to the crime boss Bek, and then "surrenders" Bek to Belov. At the same time, Kaverin passes compromising information on Belov to the special services, however, without expecting it, he himself falls under their supervision. Thief in law Luka invites Belov to engage in the arms trade. Intelligence officers recommend accepting Luke's offer. Alexander refuses. Using connections in the government, Belov is going to legalize his business. By order of Luka, a daring attempt is made on Sasha. He is forced to hide.
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.