The main character, Stas Chumakov, is a talented but difficult detective with a heightened sense of justice. His uncompromising nature and habit of charging straight ahead have repeatedly caused conflicts with his superiors, and eventually Chumakov is forced to leave the police force. Unwilling to give up the work of his life, he opens his own detective agency, where he can finally work by his own rules. Everything changes when Stas’s neighbor dies under mysterious circumstances. At first glance, both the motive and the suspect seem obvious: the victim’s ex-husband, Maxim, is celebrating his engagement to Veronika, the prosecutor’s daughter and a law student. However, the deeper Chumakov delves into the investigation, the more he realizes that secrets lie behind the façade of a prosperous life, and the circle of suspects is rapidly expanding.