1921 A large gang led by Konstantin Lenkov is active in Chita. The head of the criminal investigation department, Fomenko, and his closest assistants, Boytsov and Batashev, are making every possible effort to eliminate the criminals. But the bandits have their eyes and ears everywhere - in the authorities, in the police. Attempts to introduce criminal intelligence officers into the gang end tragically. Police guards refuse to serve on city streets at night. But after the high-profile murder of the representative of the Central Committee of the RCP (b) Pyotr Anokhin and the death of the head of the criminal investigation department Dmitry Fomenko at the hands of bandits, security officers - the State Political Security of the Far Eastern Republic - are involved in the liquidation of Konstantin Lenkov’s gang. A large-scale operational game is unfolding to destroy the gang...