Geum Jan Di is an ordinary girl whose family owns a dry cleaning store.
While delivering dry cleaning to a student at the prestigious Shin Hwa High School, she saves his life by stopping his attempt at jumping off the roof and is given a full swimming scholarship.
She attends Shin Hwa High and soon is terrorised by the leader of F4 (the four richest and most popular boys at the school) Gu Jun Pyo.
Although Jun Pyo persists on bullying her, he begins to find himself attracted to Jan Di. However, Jan Di has a crush on Yoon Ji Hoo, Jun Pyo's best friend.
When she realises that Ji Hoo is merely a close friend and that she really loves Jun Pyo the couple are thrown into a dilemma as Jun Pyo's mother sets out to break them up and find a more suitable match for her son...