In the small town of Gorovets in the Pskov region, located 30 km from the border with Latvia, an emergency occurred - half of the local police department's management was arrested. And this happened because of the largest legal business in the city - a cement plant: it was flourishing, turnover was growing, thus the enterprise became a tasty morsel for everyone, and the fight for it reached the federal level. As a result, Moscow operatives have to restore order in the city and head the local police department: Major Sergey Malakhov becomes the head of the department, and captains Vadim Gruzdev and Ivan Shadrin head the criminal investigation department.
A horrific car accident turns a married couple's lives upside down. Artist Maria's husband, businessman Kirill, becomes disturbingly perfect. Is he repenting his mistakes and trying to make up for what he almost lost forever, or is it all a figment of Maria's injured imagination? A series of increasingly strange coincidences and signs suggest that Maria can no longer trust herself.
While digging one of the many tunnels for the Moscow metro, Soviet workers unearth ruins of a dungeon. The site is closed, the metro tunnel is diverted, and amidst the bustle no one notices the tunnel workers’ foreman pocketing a little ‘souvenir’ – a book-sized frame made of precious metals featuring an inscription in an unknown language. Decades later, the foreman’s grandson Ilya, who works as a courier, discovers the ancient relic in a pile of old junk. Oblivious to the true value of the family heirloom, he soon learns about it from a mysterious stranger. The relic is the key to the secret location of the priceless ancient library that belonged to Ivan the Terrible. What Ilya doesn’t know is that the search for the lost library has been going on for centuries, and now very powerful people are after him. Ilya and the mysterious stranger decide to try their luck in finding the library.