Oh Kyung Soo

One day, a stationery store in front of an elementary school is struck by a lightning and a mysterious thing happens.

A clumsy high-school girl - Oh Ha-ni - is at the bottom of her class, and she has had a crush on a popular genius, Baek Seung-Jo, ever since she first laid eyes on him.

Of the high-rolling top 'hot celebrities' of the wealthy upper class in Korea's high society, Kang Hye Na is the one desired by the men, feared and hated by the women. Being the only successor to the largest conglomerate company, Kang San Group, Kang Hye Na has both the looks and the background. She is the owner of the 'Lady Castle' and lives a 'princess-like' life with her servants.