Set in the Joseon Dynasty, King Lee Tae and Queen Jeong draw their swords at each other amid political conflict in this bloody romance.

Lee Chung is a Prince of Joseon, but he has been taken hostage to the Qing Dynasty. He enjoys boozing, womanizing and gambling. He is also an excellent swordsman. His older brother Lee Young will succeed to the throne and brings Lee Chung to Joseon. He returns after more than 10 years. Soon, Lee Chung faces monsters that run rampant in the night.

An internet broadcaster recruits a handful of people for their 'experience the horror' show at Gonjiam Psychiatric Hospital, a place selected as one of the '7 freakiest places on the planet'. They are to explore the haunted asylum and stream it live on their online show.