After losing her memory in an accident, a bullied high school orphan finds herself in the place of an identical-looking girl who's gone missing.

To protect herself and her family, Hong Ra-on disguises herself as a man and counsels men on dating. Due to a love letter she wrote for a client, she meets Crown Prince Hyo Myeong. Ra-on is unaware that he is the Crown Prince, and Hyo Myeong is unaware that Ra-on is a woman. Soon after Ra-on is forced to become a eunuch by loan sharks, and the Crown Prince and Ra-on become interested in each other. As Ra-on tries to survive the palace and the Crown Prince navigates his journey to become king, will their love prosper?

Six dedicated students at Kirin Art High School work to achieve their dreams of becoming stars in the Korean music industry.