In a small town in eastern Serbia, a quiet and kind man suddenly kills twelve people. He then attempts suicide, but fails. Investigator Petar (played by Uliks Femi) and his partners, along with forensic expert Natasha (played by Elena Djokic), try to determine if the criminal is sane and uncover the motives behind the crime. Gradually, they become convinced that there is something supernatural behind the murders. Strange events occurring in the town are connected to the mysterious ancient ritual known as "Crna svadba" (Black Wedding)...