Seohyun, Yoona, Yuri were just kids when they move to Seoul with their mother's brother Yunho and his wife when their parents were kill in a crash, the aunt didn’t like the girls much. When their uncle goes out of town for business, their cousin Sunhwa, Hyosung and Ji Eun would get into fight with them at times and most of the time the sisters would be punish for hitting their cousin. When Yongguk and Daehyun came home