When an insidious supernatural force edges its way into a seemingly straightforward investigation into the gruesome murder of a young boy, it leads a seasoned cop and an unorthodox investigator to question everything they believe in.

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.