"Imperiya pod udarom" is a detective-historical series about the confrontation between the imperial police and anti-government terrorists. On New Year's Eve in 1901, investigator Pavel Nesterovich Putilovsky is called in for an urgent case. A pharmacy in the city has been robbed, and a fortune has been stolen from the safe, specifically three kilograms of morphine, a rare and dangerous equivalent. As Putilovsky begins his investigation, he has no idea of the tangled and perilous web of state importance he is unwittingly getting involved in.