Seoul descends into chaos as a devil-worshipping criminal network emerges. In a desperate plea for salvation, the police are forced to enlist ‘Holy Night’, a trio of demon hunters armed…

‘Monster Cop’ Ma Seok-do investigates an illegal online gambling business led by a former STS Baek and an IT genius CEO Chang. Ma proposes an unexpected alliance to Jang and…

Detective Ma Seok-do changes his affiliation from the Geumcheon Police Station to the Metropolitan Investigation Team, in order to eradicate Japanese gangsters who enter Korea to commit heinous crimes.