Moscow during the NEP. In Zamoskvorechye, a cruel gang is wielding fear in the residents of the district. Daring raids follow one another. They clearly show the handwriting of a famous repeat offender named "Gray", released from prison. A favorite resting place for bandits is a tavern on Pyatnitskaya. But it is not possible to catch them red-handed. The only way to identify criminals is to introduce your man into the inn .