In the 14th year of Inhwa dynasty, when Emperor Lee Hyeon’s illness gets worse than ever, the empress commands Crown Prince Lee Shin, still in high school, to marry the bride who has been arranged for him beforehand. However, Shin proposes to his secret lover, Min Hyorin, an ambitious ballet student who takes his proposal as a joke and turns him down saying that her success as a ballerina is of her primary concern. Meanwhile, the family of Shin Chaegyeong, an ordinary high school student, is in deep financial trouble for standing security for the wrong person and is overwhelmed with joy when they receive the marriage proposal from the Royal Family. The last words of their dying grandfather weren’t a bluff after all! Shin agrees to marry the all-too-ordinary prearranged bride provided the Changdeok Palace be granted independence and the IkWiSa be reduced.