Following the Haedong Mystic Sect incident, Father Park, Hyun-am, and Joon-hoo team up to investigate a series of mysterious deaths of gangs. Seung-hee, haunted by dreams that mirror each death, turns to Father Park for help, while the victims are revealed to be those responsible for her twin sister Joo-hee's death, and each murder eerily matches a scene from a painting by their father, Hyun-woong. As the final portrait nears completion, the exorcists must uncover the dark force behind the paintings before it claims its next victim.