A series of robberies against collectors took place in Moscow. The raiders acted boldly and brutally. Collectors were shot, no witnesses were left. Colonel Gurov is sure that the criminals are working on a tip and have an informant in the police ("Payment for Life"). In a private company, Colonel Gurov stayed for a short time, returned to Petrovka again. He faces a difficult task - to calculate and neutralize the killer, thereby preventing political murder, as a result of which the situation in the country will become not only dangerous, but also unpredictable ("We are of the same blood").