Vladimir Knyazev, nicknamed Monomakh, was like a bone in the throat for some colleagues and for his superiors. But since he was an excellent doctor and a very good person, it was impossible even for the chief doctor to remove Monomakh from the hospital. When two patients died in his department one after another—an elderly woman, Suvorova, and a famous lawyer, Galperin—an investigation began. Monomakh could not stand aside and also took some steps to find out the causes of death - and unexpectedly for himself he realized that both patients were “helped” to go to the next world. What is the “angel of death” seeking and on whose side is he acting?..