Alina and Beagle are quarreling. Alina accuses Rostovtsev of neglecting ethical standards when working with clients, and in general he doesn’t care about people. Therefore, when a new client, cemetery watchman Ivan Nikolaevich, comes to the agency and reports that he discovered an ownerless corpse in the cemetery at night, Beagle immediately entrusts Alina with independently investigating this seemingly trivial matter. The next day, Alina receives a message that Ivan Nikolaevich died: being drunk, he burned down in his lodge. The habit of not believing in accidents forces Alina to continue the investigation. Understanding the seemingly insignificant circumstances of the case, Alina does not suspect that she will be faced with the criminal secrets of the funeral business.
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.