The story of Sergey Glukharev continues. He has become a major and has taken on a leadership position in the investigative department. The main character finds himself facing numerous problems at work. Meanwhile, his friend Denis Antoshin is overcoming difficulties in his personal life. As always, they can rely on each other for support. Sergey's relationship with his boss Irina is developing. Nikolay Tarasov also takes new steps in his life. The head of the SCM, Stas Karpov, also has some surprises up his sleeve...