A rumor about how Prince Hwan has been cursed by a ghost has spread throughout the country. He has a dark secret he can't tell anyone. People who are trying to get Hwan dethroned prepare a trap and Hwan must stand against them. Meanwhile, the one who killed Hwan's Master comes to see him of her own free will.

Hwan can't trust Jae Yi and tells her to come find him in the East Palace one her own. To get there, Jae Yi turns herself into a eunuch. Meanwhile, Seong On is shock to learn that his father might have something to do with the written prayer incident.