A businessman, the owner of a chain of furniture stores, Sharkov, is kidnapped. Artyom and Mukhtar begin an investigation, but after a while the businessman returns home alive and unharmed. His wife Olga notices a number of oddities in her husband's behavior, and the office staff gets the impression that the boss is bankrupt of his own company. Artyom finds out that Sharkov had a twin brother, from whom he was separated in early childhood…
 

The sports career of the talented young athlete Dima Reutov was under threat. The doping test conducted after the competition gave a positive result. Dima came to the police for help. Artyom came up with a plan to find out who decided to settle accounts with Dima…