1991 In a case of serial murders in a provincial town, which was investigated for a long 10 years and was officially closed, a new circumstance suddenly appears - a surviving victim. Investigator for especially important cases Issa Davydov, who received a promotion for closing the case, is forced to urgently sort out the situation and justify himself to his superiors, under pressure from which he turned a blind eye to inconsistencies and insufficient evidence. He decides at all costs to correct his mistake and do everything possible so that the maniac confesses to the murders.