We Swear to Protect

There is a clandestine methamphetamine laboratory on the territory controlled by Major Nachalov. People die from "fake" drugs. The cadets of the Ministry of Internal Affairs - Kharlamov, Krechetov, Tsarev and Ushakov - are finishing their studies, a few days are left before the diploma. Zhenya Krechetov has a dizzying affair with Nachalov's daughter Nadezhda. Cadet Kharlamov confesses to a conflict with the leadership, as a result of which he is threatened with expulsion.