The heroes of the series are employees of one of the metropolitan police departments who investigate crimes committed in the central district of Moscow every day.
A tough, "male" story about the fate of Seryoga Nechaev, a guy from a working-class district. It so happened that he had to take on the blame of others and go to jail instead of the dissolute son of a rich businessman. All ten long years of imprisonment, Sergey prepares himself for revenge — for himself to become one of the mighty of this world. After being released, on the way to his dream, Seryoga faces the unsightly side of business and engages in a deadly duel with criminals.
After faking his own death, notorious gangster Volkov (Wolf) retires overseas with a new identity. When his parents die in a car accident 20 years later, he secretly returns to his hometown and learns that the nephew of a local mobster is responsible for his parents’ death. After killing the man, a battle between the old-newcomer and local crime bosses unfolds.
Major Stepan Krucha heads the criminal investigation department of the Bitovsky Department of Internal Affairs. He is the master of his "land". The bandits call him Wolfman, fearing for good reason: you can "get away" from justice, but not from an ardent defender of the law. Shoulder to shoulder with Krucha, his "cubs" - Fedot Komov and Roma Lozovoy - are standing guard over law and order. And let the bandits think that they are cooler than Cool, our heroes are not the ones who can be kept on a leash. They will take any enemy by the throat themselves...
Captain Emelin, nicknamed Emelya, Captain Vasin and Dolbunov are investigating the most complicated crimes, and criminologist Masha Likhacheva helps them in this. Emelya's reputation is so-so, the head of the department, Colonel Khitruk, dislikes him for his independent character, but has to put up with him because Emelya has a good disclosure.
GRU intelligence lieutenant colonel Ilya Orlov, nicknamed "Monk", interrupted his military career after 15 years of service and... went to a monastery. However, he soon realized that non-resistance to evil was not for him and returned to worldly life, taking a job as a taxi driver.
A journalist of a small provincial newspaper Yura has been writing unremarkable news of his hometown all his life. But suddenly an event happens to Yura that turns his whole life upside down — visions come to him that predict murders secretly and unnoticeably taking place in Rybinsk. Soon the situation is complicated by the fact that in one of the cases Yura becomes the main suspect.