The head of the Portov city police, Colonel Avdeev, fights crime with the most severe and decisive methods. And with this he very hinders the lawyer Medushevsky, striving to become the shadow owner of the city. After another successful operation, Avdeeva Medushevsky decides to get rid of the colonel. A gang of thugs in harlequin costumes attack a police motorcade and kill everyone except Avdeev himself, who miraculously manages to survive. At this time, Avdeev’s girlfriend, journalist of the local television channel Anna Loginova, witnesses a suspicious meeting between Medushevsky and mayor of Portovy Bachurin and vice-governor of the region Mitrokhin.

Avdeev receives a tip on an old criminal case, stored in the archive of the St. Petersburg Central Internal Affairs Directorate, with which you can prove Medushevsky’s involvement in serious crimes. In the archive, he meets Andrei Vershinin, his friend at the orphanage. Having deceived the right thing, Avdeev returns to Portovy and dies in an accident. The case with evidence against Medushevsky at the scene of an accident is stolen by police majors Gubin and Romanyuk. Mitrokhin and Bachurin are going to promote their man, Lieutenant Colonel Knyazev, to the vacant post, but FSB General Burov manages to prevent this and facilitate the appointment of Vershinin to this post.

Lieutenant Colonel Vershinin enters the course of affairs in a new place, gets acquainted with his deputy Knyazev and faces the first problems. He goes to the sealed house of Avdeev in the hope of finding information there that will shed light on the circumstances of his death, and meets Anna there. She notices that there are not enough things in the house. Their conversation is interrupted by the watchful outfit of the teaching staff ... Vershinin learns that the children from the orphanage are taken to the dolphinarium under suspicious circumstances. Trying to figure this out, he calls the children's ombudsman Korovin to himself, but runs into sharp resistance from the mayor Bachurin.

There is another robbery of a collection vehicle. Nikitin asks to understand everything Medushevsky. Medushevsky is rubbed into confidence in Vershinin. The robberies of the collectors continue, and Vershinin comes up with a plan for their capture. He and Knyazev and other employees go round banks instead of collectors, but this does not give a result. Then, on the advice of Knyazev, Vershinin asked Bachurin for the real twenty million for this operation. Knyazev assures that in this way they can at the same time calculate the "mole". This time there is a robbery, which Loginova shoots on camera.

Burov reports Vershinin for an uncoordinated operation to seize criminals who robbed collectors. On the way home, Vershinin rescues a girl who turned out to be his neighbor from a bully. In gratitude for her salvation, Olga invites him to visit. On television, Vershinin sees a report in which the robbers' car flashes. He appeals to the editorial staff of the TV channel for the source, not suspecting that he had already been ahead of Gubin and Romaniuk, who sent a friend video engineer to remove all materials from the server. Meanwhile, Medushevsky, with the help of his brother, manages to find out who is behind the robberies

Vershinin meets with Anna Loginova, she gives him a saved copy of the robbery record. Vershinin comes to the conclusion that the traces of the robbers lead to the fighters of the Russian Guard ... Medushevsky makes it clear to Knyazev that he is aware of his connection with the gang robbing the collectors. Vershinin suggests that the robbers could have drowned a car in a lake that came across them along the way. He calls for help to the Ministry of Emergency Situations Oparin, who sends divers to explore the bottom of the lake. But at the bottom of it they find not at all what they were looking for ... Anna continues to spy on the orphanage, and she manages to rent a car in which children are transported.

Vershinin conducts an operation to detain fighters of the Russian Guard, as a result of which all suspects in the robberies of collectors die. From Novikov, Vershinin learns that fighters of the Russian Guard have died from shots from a rifle belonging to an unknown sniper. The forensic scientist also reports that all the people found at the bottom of the lake were killed in the same way - by shooting at the temple on the right side, and all were connected by the same type of sea knot. Meanwhile, Vershinin’s acquaintance with Olga turns into a novel. In the morning, at the gates of his house, Medushevsky discovers a murdered group of young people. Among them, Vershinin recognizes one of Yakovlev’s guards.

Gubin secretly comes to Novikov’s office to clean up the evidence ... Nikitin finds his eldest son German killed in a drug overdose. The boy Petya Karelin disappeared in the orphanage. The director of the orphanage Zotova is very worried, but she does not care about the fate of Petya. Starting to study the circumstances of the disappearance of the child, Vershinin notices discrepancies in the testimony of the director and the teacher.

Oparin tells Vershinin that among the corpses recovered from the bottom of the lake, he recognized the CSS investigator who was working on the case of the missing assistant prosecutor Vasilevsky. However, the glass eye, by which one could be identified, strangely disappeared before the bodies arrived at the forensic expert. The search team organized by Vershinin finds Petya Karelin who escaped from the orphanage dead. Yulia Vershinin’s daughter comes to Portovy and first gets to the station where she meets Artem Yakovlev, who was detained for driving without a license.

Gubin receives a task from Knyazev to kill Svetlichny - fake adoptive parents of Masha Karelina. Julia, together with her new acquaintances - Artyom and Yura - throws a large-scale party in the country, where she tries the drug and falls into a coma. Yura brings her to the hospital. There, unknown people are trying to kill her, but the return of the nurse interferes with her plan. Having learned about what happened, Vershinin arranges a round-up at the site of a youth party.

During Vershinin’s stay in the cell, the attackers manage to burn down the drug production workshop and kill Oparin. In addition, from the doctor Vershinin learns that Julia someone intentionally injected insulin, causing a sharp deterioration in the condition. Now Vershinin is sure that there is a traitor in his circle. Having come to Olga, Vershinin catches her a suspicious man, whom Olga represents as his classmate. But Vershinin has reason not to believe her. Now Andrew can only trust Anna, a relationship with which develops into a love affair. To avert Vershinin’s suspicions, Romaniuk and Knyazev decide to portray official zeal and take the right hand of Yakovlev - Sibirtsev in the drug club.

Having learned that his brother died because of Yakovlev’s “business”, Nikitin’s son is ready to surrender all drug traffic to Vershinin. Medushevsky pretends to try to resolve the conflict between businessmen, but in fact pits them even more. Vershinin receives from Burov a list of snipers, in which he discovers the name of Vladimir Medushevsky, who allegedly died during the Chechen war. Anna conducts her own investigation into the illegal adoption of Masha Karelina and finds out that her adoptive parents

An employee of the police archive - Major Andrei Vershinin - is suddenly promoted and transferred to the border town of Portovy. Vershinin will occupy the post of head of the Internal Affairs Directorate instead of the recently deceased Colonel Avdeev. The new boss is met coldly: his subordinates are almost openly in conflict with him, and the press and the public, excited by the recent series of robberies, are simply outraged by this appointment ...

The only loyal companion of Vershinin is journalist Anna Loginova: together they must figure out what is happening in the city of lawlessness. For a short period of time, the hero will have to prove his competence in solving crimes and not back down even in an atmosphere of general mistrust.