It's the end of the Joseon era and cheerful third Prince Byun Baekhyun meets a no nonsense merchant's daughter, Hwa Narae, and their second encounter becomes sealed through a single touch. Whispers circulate that demons hide amongst royals and commoners alike, a blind search beginning to create unrest at the palace...

In which a general's daughter, Yeo Hayan, trades herself as a concubine in the Emperor's harem for her brother's life and catches the eye of Crown Prince Oh Sehun, a ruthless heir rumoured to have been cursed with loneliness for his cruel acts by the Moon Goddess, Dalnim; he hides a secret, and so does she.