Hardworking Geum Jan-di (Ku Hye-sun) attends the exclusive Shinhwa High School. She finds her shallow, privileged classmates unbearable, especially the notorious F4. Rich, handsome, and arrogant, Goo Jun-pyo (Lee Min-ho), Yoon Ji-hoo (Kim Hyun-joong), So Yi-jung (Kim Bum), and Song Woo-bin (Kim Joon) are the kings of the school and no one, not even the teachers, dare challenge them. No one, that is, except Jan-di. Angry at their rudeness, Jan-di tells off F4 leader Jun-pyo, bringing a world of trouble upon herself. The proud and persistent Jun-pyo falls hard for feisty Jan-di, but she shares a connection with the quiet, sensitive Ji-hoo. Caught between the two friends, Jan-di’s heart is torn.
Cast
Lee Min Ho portrayed, the bad boy, Gu Jun-pyo.
Ku Hye Sun portrayed, the weed, Geum Jan-Di.
SS501 member, Kim Hyun Joong played, the golden boy, Yoon Ji-hoo.
Main characters
Ku Hye-sun as Geum Jan-di
Geum Jan-di is the headstrong daughter of a dry cleaner. While on a delivery run to Shinhwa High School, she saves a bullied student from committing suicide. She is offered a scholarship to attend the prestigious school, and ends up getting on the dark side of Gu Jun-pyo.
Lee Min-ho as Gu Jun-pyo
Jung Chanwoo as young Gu Jun-pyo
Kang Han-byeol as child Gu Jun-pyo
Gu Jun-pyo is the leader of F4 and heir to ShinHwa Group, one of the most powerful business groups in South Korea. As leader of the most popular and powerful clique in ShinHwa High, he torments Jan-di after she stands up to his bullying ways, but ends up falling madly in love with her. His family is one of the most rich and elite in the country.
Kim Hyun-joong as Yoon Ji-hoo
Nam Da-reum as child Yoon Ji-hoo
Yoon Ji-hoo is a member of F4 and the grandson of a former president of Korea. His musical talent catches Jan-di's attention and she begins to develop feelings for him. He has a driving phobia after being involved in a car accident that killed his parents and left him the only survivor. He is initially in love with Min Seo-hyun, but eventually falls for Jan-di and acts as her protector.
Kim Bum as So Yi-jung
So Yi-jung is F4's Casanova. He is a skilled potter. His family owns the country's biggest art museum. He eventually changes his playboy ways, when he realizes that he is in love with Chu Ga-eul. Although he doesn't develop romantic feelings for Jan-di, he does grow very fond of her and they become good friends.
Kim Joon as Song Woo-bin
Song Woo-bin is known as F4's Don Juan. His family runs the country's largest construction company, which Woo-bin later admits has strong connections to the mafia. Like Yi-jung, he eventually befriends Jan-di and becomes caring and protective towards her.
Kim So-eun as Ga Eul
Jan-di's best friend who works with her at the porridge shop. She falls for So Yi-jung after he helps her get over her cheating ex-boyfriend. He eventually reciprocates those feelings at the end of the series.

Boys over Flowers (Korean Drama) With English Subbed