Criminal investigation officer Konstantin Zhuravlev served in the police for twenty years. Years of work in detective work were not in vain for him - at the end of his work history, he was seriously ill and forced to fight not only with a dangerous killer, but also with his own illness. In the end, he overcomes both, for this he thanks not only the people close to him, but also the victim of the bloodthirsty criminal, who pushed the detective to actions that saved him from imminent death.