An ordinary college student, Lee Seol (Kim Tae-hee), finds out she's a princess and the great grand daughter of the Joseon Dynasty's last Emperor, Emperor Sunjong.The grandson of the Daehan Group, Park Hae-young (Song Seung-hun), is put in charge of educating Seol on proper etiquette in order for her to fulfill her role. However, Hae-young is put in a precarious situation when he finds himself drawn to Seol, the girl who will take away his inheritance if the monarchy is restored.