One day, Tina’s ex-husband Lenchik and his young wife Alina unceremoniously invade Tina’s apartment. A schoolteacher, intelligent and sophisticated, Tina can do nothing to oppose the impudent impudence of her ex-husband. The situation gets even worse when Alina abandons her newborn son and hides in an unknown direction. Lenchik decides to return to his relationship with Tina. And he acts with his usual unceremoniousness.
Talented mathematician Anna Nikolaevna Shvabrina works as a school teacher. By the will of fate, she begins to help Captain Vershinin investigate complex crimes using mathematical methods. The main tools of the investigator are many years of experience and the basics of forensic science, Anna Nikolaevna is an impeccable knowledge of mathematical methods, formulas and models. It would seem that they are completely different, but it is thanks to this union that it will be possible to investigate the most difficult cases.
The series features a hero of our time, a guy who after being discharged from the front challenged the circles of crime and corrupt officials in the capital. The series stars Vlad Nikitiuk, a well-known actor and volunteer as the protagonist. The story centers on a turning period in the life of a young man, Igor Shvedov. On the very first day of his return from the front, his older brother, the only person dear to him, is killed before his eyes. Unexpectedly, he learns that his brother was an influential criminal mastermind and starts suspecting that the people in his circle are not at all who they pretend to be. To find his brother's killer, he joins the police and begins his war against organized crime and bent cops.