Simple operative Sanya Balabin is promoted to the rank of major, but his family problems remain unresolved. His relationship with Lena is once again on the brink, and the hero starts an affair on the side. Meanwhile, a cold-blooded killer appears in the city, acting boldly and cruelly, always staying one step ahead of Sanya. In addition to searching for the ruthless murderer, Balabin will have to neutralize black realtors, catch the killer of a young girl, dismantle a gang of drug dealers in Gelendzhik, and uncover a mole in his own department. Balabin once again hopes to handle everything without anyone's help, but fate throws him into seemingly impossible situations.