After an unsuccessful special operation, scout Alexander Volk ends up in the prison of the Arab East. A few years later, retired KGB Major General Goltsman helps him get out of captivity, but in return asks Wolf to find his son's killers. The murdered man was a good friend of Alexander, so he immediately gets down to business. On the eve of his death, Holtzman's son was investigating the events of June 3, 1943 on Kamenny Most in Moscow, when the daughter of the USSR Ambassador to Mexico was killed. The wolf restores the events of the past, but the more he learns, the more dangerous the case becomes ...