Kim Hee-Young is a bright and shy talented girl, who is famous for being the younger sister of Super Junior's Kim Heechul. She is the youngest in the family but as in talented, not  just musically but in fashion world. She is the youngest in S.Korea to be a professional Make Up & Fashion Stylist. As she was hired by SuJu's manager to be their personal Make up & Fashion Stylist. She of course happily accept, at the thought of working with her older brother and Yesung who she admires and tiny bit of a crush. But when she first started to work, Yesung treats her coldly. Calling her a spoilt perfect brat while Siwon who likes her like younger sister helps her and become her 'oppa' while Heechul is not around. Heechul really loves her and treats her dearly and highly supportive of her.But when Siwon is around her too much, why she suddenly feels akward between Siwon? While Yesung starts to feel something for her.