The corpse of old Bobo Nazir was found in a mountain village after a fire. Major Kasymov in the basement of a burned-out house discovers a chest with jewelry that belonged to the Basmach Rakhimbek. The absence of a priceless battle belt points to the cause of the crime. The detectives go to the jewelry dealers to capture the criminals.
One of the mountain passes of Tajikistan, which is an important strategic object, is controlled by the Basmati detachment of Kurbashi Kerim Dodho, who is respected by the people. The head of the OGPU Paramonov, in order to avoid bloodshed, convinces Kurbashi of the expediency of holding peace talks. However, the counterrevolutionary group, which has its own people in the militia units, is trying to interfere with the negotiations between Paramonov and Dodho, a Bolshevik sympathizer.
