The drama tells the story of the brotherly romance between 18-year-old Tae-joo and Guk-yi. In the drama, Han Ki-chan will play the role of Tae-joo, the only heir to a chaebol family and a member of a recognized royal family with a magical charm. Jang Eui-su will play the role of Guk-yi, a friend and personal bodyguard who has a strong physique and always protects Tae-joo.