None of the operatives voluntarily wanted to go to work in the new district of Vaselkovo, cut off by the railway "ring". Four "shot down pilots" were found in the department: Yegor Ozhogin, who began to drink frequently after the death of his wife, Anatoly Davydov, whose hussar adventures did not please the authorities, Mikhail Belsky, who carried out a successful and profitable operation with financial assistance, and the naive orphanage boy Sergei Matyukhin, who regarded his appointment to the department as a promotion.

One morning, the residents of a nine-story building discover that their elevator is missing. Nadezhda Nosova, a housewife and mother of two sons, is taking over the investigation. The younger Artyom is forced to help her, but the deeper they dive into the case, the more they learn about neighborhood secrets, encounter intrigues and mysteries that unexpectedly lead to the main suspect, Nadia's eldest son Denis. Now solving a crime becomes a matter of honor.