MURA operative Konstantin Troshin returns from the front after the victory in the Great Patriotic War and finds out that he no longer works in the police. The reason is a conflict with an influential general of the NKGB of the USSR. But Troshin cannot imagine his life without the police. He manages to get a job as a precinct officer in the most disadvantaged area of Moscow — Maryina Grove.

The elderly criminal authority Semyon Timofeevich Babushkin, about whose thieving talent legends were made up at the time, has not left prison for the last 35 years, preferring it to freedom, where he has no friends or relatives left.

Former border guard Sasha Dymov returns to his native village of Kordona after serving time in prison on false charges. There is nothing left of his previous life — his wife left for her best friend, it is impossible to return to law enforcement agencies. A faithful comrade Trofimych comes to the rescue — he takes Dymov under his wing and arranges an auto mechanic in his workshop. It would seem th...