1480 of the Joseon Era. After the death of her father, Hyeon Mi disguises herself as a man and goes on a journey for her mother, rumored to be in China. Along way, somehow fate brings her to assist the Crown Prince Jiyong and his guards. Impressed, and short a body guard, the prince and his brother general Seunghyun persuade Hyeon Mi to temporarily join them. What seems to be just a small temporary journey, turns into something more.