Hanlim Multi Art Highschool, once an all-boys school notorious for its wild students and for generally being a terrifying place for girls, has recently become a co-ed school. With the female population still a minority and living in fear of the over-the-top antics of the males, Kim Yoona takes it into her own hands to reform the school and allow the girls to feel safe in the rough environment.

Training, studying and even becoming the first female student council president of the school, Yoona has gained a reputation among the male students body as an uptight boy-hating dictator and as a shining hope for the teachers and fellow female students. However, despite her tough-as-nails appearance, she secretly works part-time at a maid cafe in order to support herself. Unfortunately, she had been dropped from the cafe she works. She had to find another job.

While walking at the park, she saw a flyer with "WANTED TALENTED SINGER" imprinted in it. She decided to go and try her luck. On that day, it turns to be that one of the members of the Boy Band she supposed to be with,is SHIN DONGHO,the boy who's her actually prime enemy.

What would happen to her studies??How would she handle so many intrigues??How would she cope up with her fellow idols especially Dongho??What if they fall for each other instead??How could she control her feelings for the sake of stardom?