It tells both the heart-fluttering love story and fierce obsession of a King with two opposite personalities and an assassin girl who wants to kill him but ends up falling in love with him.
Crown Prince Sajo Hyun is an intellectual character who uses his innate artistic sense to work as a fashion designer at a downtown boutique while hiding his identity of crown prince. He has a wound deep down in his heart from his childhood due to his oppressive father Sajo Seung. Sajo Hyun’s other personality Ak Hee is a charming character who can easily seduce others, but he is cursed to feel extreme pain when he makes physical touch with others.
Yeon Wol lives a life full of twists and turns, going from an assassin to concubine. Yeon Wol is the royal descendant of the fallen Yeon Dynasty and the only daughter of Yeon Poong Hak. Yeon Wol hides her identity and becomes assassin Gye Ra to avenge her family. While trying to assassinate the king, she falls into a trap set by an unknown person and wakes up the next day with no memory of her past.
Lee Heon is the king of Joseon. 7 years ago, when he was a crown prince, his beloved wife died. To this day, he has not been able to get over her death. For the past 7 years, the royal family and government members have tried to get King Lee Heon remarried without success. The nation has also implemented a geumhonryung edict, which is a ban on all single women marrying during this time when the king has not married. People are furious over the marriage ban. One day, King Lee Heon hears of a woman named Ye So Rang, who claims the spirit of the king's late wife exists within the royal palace. Meanwhile, Ye So Rang is a swindler and claims to interpret marital harmony signs. She is arrested and jailed where Officer Lee Shin Won works. To get out of her predicament, she pretends to be possessed by a spirit in front of Lee Shin Won. During her ruse, she mentions that the spirit of King Lee Heon's late wife exists within the royal palace. She is then brought in front of the king and he asks her if she can really see his late wife's spirit. To survive, Ye So Rang acts like her body is possessed by the king's late wife. Ye So Rang's lies get bigger and more audacious.
