Lena: 24/26 year old girl who's rich and is a fashion designer and has a boyfriend named Leeteuk who's 31 years old. But her parents set up an arranged married her to Kangin who's 29 years old and is working hard for their company.

Julie: 19/20 year old girl and is younger sister of Lena. She's very arrogant, selfish, trouble maker in a family. So her parents decides to make an arranged married her with Jaejoong (who's only heir in Jung's company) but she has two boyfriends Junsu & Yoochun.

Yoochun: 23 years old and is boyfriend of Julie, but secretly he dates with Junsu.

Junsu: 26 years old, also a boyfriend of Julie and cheats on her with Yoochun.

Jung Yunho: 38 years old and is a father of Jaejoong.

Jung Hee Chul (Kim Hee Chul): 36 years old and is a mother of Jaejoong.

Jung Jaejoong: 21 years old and is only son & heir of Jung company. Gets forced married to a girl named Julie and the two will hate each other.