Haneul is a woman with terrible luck, and all she wants is a peaceful and normal life. But one day, she has an erotic dream about a mysterious man, who reveals himself to be the king of demons and the only dragon in the other world, Jinmong. Jinmong wants to make Haneul his bride, but she doesn’t believe in his existence. They begin a fateful and destined romance, but what will be their ending?