Lieutenant Colonel Medvedev has been working in the police for the last few days. First, RUBOP, service in which Nikolai gave twenty years of life decided to disband, and secondly, Medvedev, yielding to the insistence of his wife, was going to retire from the police on seniority. On the eve of dismissal, the operative has to participate in an operation to detain a dangerous criminal — a well- known killer nicknamed Zhgut.