Artyom's neighbor Zinaida Afanasyevna was going to sell her apartment and buy another one. The old woman forgot the name of the agency, only remembered that it was connected with some kind of conqueror… In the morning, a man's corpse was found in Pokrovsky-Streshnev, they managed to identify him and found out that he had recently sold his apartment through the Tamerlane real estate agency. It dawned on Artyom that the conqueror and Tamerlane were one person, and his beloved neighbor was in danger.

While fishing, Mukhtar found the corpse of a man in a coastal sedge. Shortly before that, Artyom saw two hunters with guns. It turned out that one of them, Seregin, had been shot by someone. His companion and friend Nagorny falls under suspicion, besides, a gun was missing from his car. To the local prosecutor's office, this case seems extremely simple and Nagorny is being detained. But it becomes obvious to Artyom with a little bit that Nagorny is most likely not to blame…