Jung Soojung. The meanest girl in Seoul Elite Middle and High School. Commonly referred to as S.E.M.H.S. Soojung goes by Krystal, and rules the school with her posse. Two other girls. Jinri, who goes by Sulli, and Sun Young, who prefers Luna. Krystal is training to be a singer and dancer, following in the footsteps of her sister.

Jessica, Krystal's older sister, is a member of world famous group Girls' Generation. Jessica is one to meddle greatly in her younger sisters life.

Amber Liu though is a student in Korea for a year of studying. Unwittingly she catches the popular girl's eye. But not as a female. As a male. An issue she's been having since she came is to Korea is just that, she keeps being mistaken as a male.

How does fate take this situation? Will it end poorly or not?