After Grom and Dubin try to suppress the prison riot, the Ministry of Internal Affairs is thinking about replacing employees with drones.

Igor Grom faces a villain in a mask, and later receives a call from a terrorist who reports a bomb.

Dubin decides to find out who is behind the prison riots. Grom asks for help from Pryserov, a journalist.

Major Grom goes to a psychiatric hospital to meet with Razumovsky. Through a game of chess, they explore their memories of childhood.

While Julia makes a report on a bomber terrorizing the city, Grom attacks Razumovsky.

Dubin and Julia form a plan to save the city. Meanwhile, Major Grom turns to Razumovsky for help.