The series is about a mysterious serial killer who keeps the whole city in fear and terror. All attempts to find the killer have failed. As a result, experienced detectives Rauf Eyvazov and Kanan Orujov are assigned to find the killer. Each murder carries a message and makes the crime case more complicated.

Polish-born Russian subject Cezary Baryka comes of age during a tumultous period of ten years from 1914 to 1924, during which he witnesses revolution, rebirth of Poland, war with the Soviets and communist plots.