What happens when two different people from two different worlds suddenly collide? Liezel Lee is an ordinary college student whose life drastically changes when she learns that she's the long-lost princess of Korea. But since she's not familiar with the way of life inside the palace, the dashing diplomat Ethan Park is put in charge of teaching her proper etiquette and other things she needs to know about being part of the royal family. But he's no ordinary guy either since he's the only heir to the largest conglomerate in the country. Because their personalities are exact opposites, Liezel and Ethan find themselves quarreling with each other even at the least provocation.

But will their love-hate relationship turn into a full-fledge romance once they get to know each other better?