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.