Euna's friend Serista wins a singing competition and she can go to Korea with her friend; Serista (Jung Seo Rin), and her cousin, Regina (Choi Rae Na) and stay there for one month. She gets the rare chance to meet Super Junior and of course she is excited by that. She hopes that they like her, but her self esteem is low because she is "fat". And has many acne and blackheads because of her fat. But actually she is sweet. After meeting them, she's determined to lose weight. While doing so, she befriends one of the members, and something special devolps from what seemed like a simple friendship.