In a chaotic Joseon dynasty with vampires, ghosts, and shamans, Park Moon-soo, who calls himself a dark-speaker, destroys a corrupted official. In order to subdue the dark master Park Moon-soo, who is trying to revive the vampire king, the court dispatches Anson, a military officer who has just passed the exam, to find Hong Kil-dong, an outlaw who is good at swordsmanship and martial arts and dispatches him to Taebaek Mountain."