Kim Yongsun was a 22 years old princess in Goryeo Dynasty. She was casted aside by the royal family even though her beauty was captivating and her musical talent surpassed the rest because her mother was only a mere concubine. Moonbyul was a 29 years old former rapper and the CEO of Wolseong World Entertainment in the present day. She was in debt and the company would face bankruptcy if she couldn't debut a new artist and made pr