Kim hee soo is a typical school nerd who just wants to fit in. But school bullies have something else in mind. Although she is the sister of the two most popular boys in school, but that does not seem to be of any help. As one guy in particular has vowed to make her life living hell. As time passes, her resolve of fitting in changes into proving her haters wrong as she finally gathers courage to secretly follow her dreams of becoming a world-wide pop sensation. Will she be able to achieve her goal and show her haters how wrong they were? Or will she back out due to the continuous blows on her confidence.