The wedding of Turkina and the Criminalist collapses just before the start. Sinitskaya, Popova, Verba and a Criminologist are trying to save the celebration. Makarov wants to finally choose a side in his love triangle.

Makarov accidentally sends Margarita a video where he confesses his love to Lera. Sinitskaya and the Criminologist suspect that Turkina is involved in the arson of a neighbor's car, and Willow and the Attendant decide that Vitalik needs to take care of someone so that he does not grow up to be selfish.

Popova becomes jealous of Semyon, as he spends too much time with her friends. Willow decides to steal Vitalik's new bike to teach him to appreciate things. Makarov, Turkina and Sinitskaya are investigating the sale of drugs in the Butovo area.

The attendant gives Willow an unusual sexual gift and waits for her to respond. Turkina finds out that the restaurant where she is supposed to have a wedding is going through one of Popova's cases, and Zhilin helps Vyazemsky "correctly" pass the check.

Makarov helps Zhilin find the criminals who stole money from his card. Turkina and Sinitskaya switch places for the day, and Willow is trying to figure out why the Attendant has become too economical.

Margarita does not like that Makarov is spending more and more time with pregnant Lera. Popova helps Zhilin find the hooligans who "abused" his car. A real war is unfolding between Willow and Sinitskaya because of the usual "school prank".

Employees of the criminal investigation department of the Butovo district do not remain without work. Makarov and his four charming colleagues do not give up hope of competently combining everyday work and personal life. Willow's son has grown noticeably, and now the girl is throwing all her strength into finding a suitable father for him. And finds him, right next to the duty station. Turkina and Denis still can't figure out their own feelings. However, this does not prevent Turkina from pushing her companion forward every now and then, so they are preparing for the wedding. But Popova, who constantly finds herself in ridiculous situations, is not at all up to romance. But her love will not be spared - she is conquered by the star of the police series. Sinitskaya, having discarded all prejudices and principles, plunges headlong into flirting and petty affairs. Makarov himself never ceases to be convinced that women are only capable of destroying his life. He is going through Lera's departure and is trying to build a relationship with Margarita, a lawyer. And along the way, Butovo police officers are trying to protect their area from criminals.

Margarita begins to be jealous of Makarov, as he goes with Lera to courses for young parents. The attendant receives a romantic balloon flight as a gift from Willow, but hides that he is afraid of heights. Sinitskaya smashes Salamatin's very expensive phone.

The criminologist finds out that Turkina wants to conclude a prenuptial agreement, and comes up with an inheritance that has "fallen on her head". Sinitskaya asks Willow to give her at least one solved case, otherwise Makarov will take her days off. Zhilin is "hooked" on a computer game and depicts violent activity in front of Salamatin so that he does not load him with work.

Makarov does not know how to admit to Margarita that he will soon have a child with Lera. Kurenkov is going to a rock festival, but Turkina cannot decide whether to go with him or not. Popova accepts a statement from the victim, who was hit by a famous actor Semyon Rybnikov in a car.

Lera returns to the department, which shocks Makarov. Zhilin opens a business for raising children, sending an "uncle policeman" to them. Popova and Sinitskaya want to help Willow arrange a personal life, not knowing that she is hiding an affair with the Attendant.

The duty officer stays overnight with Vitalik for the first time. Vyazemsky asks Zhilin to help return the impulsively purchased sports car, and Makarov forces Popova to train Sinitskaya so that she passes the shooting standard.

Semyon invites Popova to dinner to introduce her to her father. Makarov asks Sinitskaya to "cover up" Margarita once again, but she got tired of it, and she decides to teach them both a lesson, and the dispute between the Criminologist and Turkina about the upcoming wedding spreads to the entire department, so Salamatin is forced to intervene in the conflict.

Vyazemsky turns to Makarov for help, unexpectedly, but his problem is a harrasment from a higher prosecutor. Verba is sure that the FSB is "interested" in the Duty officer, in a bad sense of the word, and Turkina "gets hooked" on betting, believing that a mathematical mindset will help her win.

Margarita wants to get to know Makarov's friends better and invites Zhilin and his wife to dinner. Popova is going on a first date with Semyon, the star of the police series, and Sinitskaya and Turkina are howling for the last undistributed prize.

The police department is filming a police series. Salamatin agrees with the director that he will play in one episode, Willow confuses the actor and the suspect, and Popova gets to know the main character closely.

Popova, Verba and Sinitskaya find out that Turkina chooses a witness for herself with the help of a comparative table, the girls begin to fight for this honorary title. The entire department, including Salamatin, orders cheap phones through Sinitskaya, but after prepayment, the seller disappears, and Willow and the Attendant are increasingly immersed in irregular relations at the workplace.

Popova and Verba decide to solve the case without leaving the opera house, but using only their imagination and brainstorming. Makarov is offered a good position in the Central Committee, and Zhilin and Salamatin arrange a "send-off" for him.

After the Duty Officer's birthday, Willow wakes up in the same bed with him, and Makarov and Zhilishchny find out that Salamatin was robbed in search of a drink. Sinitskaya "knocks" on Popova, and Makarov gives them a joint task as punishment.

Makarov is happy in a new relationship - he got together with lawyer Margarita, with whom they once had an affair. Turkina finds a ring from a Criminologist and is sure that he is going to propose to her. Sinitskaya learns that the staff psychologist of the department can send employees on vacation at his discretion, and wants to take advantage of this.