Plot synopsis: In the small town of Gorovets in the Pskov region, located 30 km from the border with Latvia, an emergency occurred - half of the local police department's management was arrested. And this happened because of the largest legal business in the city - a cement plant: it was flourishing, turnover was growing, thus the enterprise became a tasty morsel for everyone, and the fight for it reached the federal level. As a result, Moscow operatives have to restore order in the city and head the local police department: Major Sergey Malakhov becomes the head of the department, and captains Vadim Gruzdev and Ivan Shadrin head the criminal investigation department.