Starring:

Kwon Yuri 

The beautiful wealthy daughter of a divorced parents. She is the former Queen Bee and current It Girl of Upper East Seoul University who mysteriously disappeared. After two years she return to Seoul and was revealed of being board school in America. Her return sparks her old rivalry with her bestfriend, Yoona and her old flame to Yoona’s boyfriend Yunho. Engaged to Nichkhun for their business partnership

Im Yoona 

Upper East Seoul’s University beautiful and popular Queen Bee. She is dating Jung Yunho and bestfriend with  Kwon Yuri  When Yuri returns from boarding school, Yoona sees it as a threat to her Queen Bee status does beginning of their BFF’s Rivalry.

Jung Yunho

Handsome, rich and popular boy of Upper East Seoul University. He was the son of Seoul’s Congressman. Often called as the ideal Dream Boy in the campus. He was dating Yoona whom he was keeping a secret that could damage their relationship. He has a crush on Yuri ever since they met but she didn't felt the same towards him.

Horvejkul Nichkhun

An American-Korean handsome boy who went to Korea together with Yuri. He was the heir of a Shipping Company based in America. Engaged to Yuri just for family business. He will soon transfer to Upper East Seoul University and will compete with Yunho for popularity. 

Kim Eli

The popular bad boy of Upper EAst Seoul University but secretly likes Yoona. He was considered as the black sheep of his family as he belong to a well-mannered family. Heir to Kim Chains Of Restaurants.

Others:

Song Victoria

Daughter of a Hotel Owner and one of the Upper East Seoul University mean girl. 

Hwang Tiffany

Her father works as Vice President of Yuri’s family company. A former ally of Yuri and one of the mean girls of Upper East Seoul University. 

Jung Jessica

Mean and sophisticated new friend of Yuri when she came back to Korea. She will urge Yuri to take back her Queen Bee status to Yoona.

Kwon Jiyong

Older brother of Yuri and  Nichkhun's bestfriend. 

Im Doojoon

Yoona's older brother and Yunho's bestfriend. 

"Others will appear"