Businessman Stepan Kireev approaches Andrei Rostovtsev and asks him to find Judge Zobov as soon as possible. Zobov received a large bribe from Kireev for promising to make a judgment in favor of the businessman, and then disappeared. During the investigation, unexpected details from the life of the judge begin to emerge. It turns out that Zobov had pathological honesty, which is confirmed by the agency secretary Vera Antonovna, who worked with him many years ago. In addition, it turns out that the 60-year-old judge had a young mistress. But most importantly, the detectives learn that Judge Zobov is terminally ill. So what made Zobov commit malfeasance? And where is the judge now? Private detective Andrei Rostovtsev and his team are struggling with these mysteries.
An attempt was made on businessman Marat Shaikenov. Shaikenov believes that this is the same sniper who has been keeping the entire city in fear for a month, committing more and more murders. Shaikenov turns to the Beagle detective agency with a request to find the sniper. Moreover, death now threatens not only him, but also his fiancée Ella. Investigating this complicated case, private detective Andrei Rostovtsev meets family psychologist Alina Belova, who, thanks to her professional experience, helps Rostovtsev identify the criminal. Rostovtsev invites Alina to become a member of his team.
Alina's fiancé, the famous journalist Dmitry Aristov, lost a flash drive with compromising information on Deputy Governor Stanislav Kravchenko, who, according to his wife Maryana, was involved in the murder of their housekeeper. The detectives, along with a new member of the team, 18-year-old Young, get down to business. One version replaces another, mysteries multiply. Thanks to Alina's professional instincts, she manages to figure out the true killer, whose name comes as a surprise to the whole team. After the successful completion of the case, Alina accepts Andrei Rostovtsev’s offer to become a full-time psychologist at the Beagle detective agency.