Alexander Maksimov is a brilliant psychologist and the best negotiator in Russia. He has vast experience behind him and a large number of saved people: he worked during terrorist attacks, convinced the release of hostages, dissuaded criminals and victims from committing a fatal act. Over the years in the profession, Maksimov has developed his own unique method of negotiating. But even a seemingly ideal employee makes mistakes. In the past, Maksimov, negotiating with terrorists who seized a school, is defeated - his daughter dies. Unable to look his wife and son in the eyes, Alexander leaves the family. Years later, the man again encounters the culprit of that tragedy - it turns out that the attacker did not die during the explosion at that school and now poses a new challenge to Maksimov.
