Synopsis

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.

Main Cast

• Koo Hye Sun as Geum Jan Di

F4

• Lee Min Ho as Goo Joon Pyo
  • Kang Han Byul as young Joon Pyo
• Kim Hyun Joong as Yoon Ji Hoo
  • Nam Da Reum as young Ji Hoo
• Kim Bum as So Yi Jung
• Kim Joon as Song Woo Bin
• Kim So Eun as Chu Ga Eul (Jan Di's best friend)

Extended Cast

• Kim Hyun Joo as Goo Joon Hee (Joon Pyo's elder sister)
• Lee Hye Young as Kang Hee Soo (Joon Pyo's mother)
• Ahn Suk Hwan as Geum Il Bong (Jan Di's father)
• Im Ye Jin as Na Gong Joo (Jan Di's mother)
• Park Ji Bin as Geum Kang San (Jan Di's younger brother)
• Han Chae Young as Min Seo Hyun (F4's best friend/Ji Hoo's ex girl friend)
• Lee Min Jung as Ha Jae Kyung (JK Group's CEO's daughter and Jun Pyo's fiancee)
• Lee Jung Gil as Yoon Seok Young (Ji Hoo's grandfather)
• Jung Ho Bin as Jung Sang Rok (Kang Hee Soo's Chief Secretary)
• Lee Si Young as Oh Min Ji
• Gook Ji Yun as Choi Jin Hee / Ginger
• Jang Ja Yun as Park Sun Ja / Sunny
• Min Young Won as Lee Mi Sook / Miranda
• Kim Ki Bang as Bom Chun Sik (Jan Di and Ga Eul's boss)
• Song Suk Ho as Butler Lee
• Kim Young Ok as Head Maid
• Im Ju Hwan as So Yi Hyun (Yi Jung's older brother)
• Park Soo Jin as Cha Eun Jae (Yi Jung's first love)
• Kim Jong Jin as So Hyun Sub (Yi Jung's father)
• Kim Min Ji as Jang Yoo Mi
• Jung Ui Chul as Lee Min Ha / Min Jae Ha (fashion model)

Cameo Appearances

• Kim Hyung Joon as himself (cameo, ep4)
• Kim Kyu Jong as himself (cameo, ep4)
• Heo Young Saeng as himself (cameo, ep4)
• Lee Hae Woo as Host Q (the guy who drugged Jan Di's drink, ep4)
• Lee Jung Joon as Gong Soo Pyo (Ga Eul's boyfriend, ep9-10)
• Heo Kyung Hwan as cell phone event MC (ep10)
• Lee Jung Sung as radiologist (cameo, ep13)
• Hai Ming as Ming (Ji Hoo's friend, ep14-15)
• Lee Suk Goo (이석구) as (Shinhwa's high school principal)
• Jo Soo Bin as announcer
• Jang Se Hyun as tied-up student (cameo)
• ?? as Goo Bon Hyung (Joon Pyo's father)