Kim jongwoon aka yesung has a perfect life. He has great friends and a perfect girlfriend. Kim Ryeowook has just moved in to the new neighbourhood. The moment she saw yesung, she liked him. But sadly, he already has a girlfriend, Eunji. She knew she would never win against her. She is just so perfect. Until an accident made Eunji lost her life tragically. Since then, yesung changed. He seldom talks to people and keeps to himself. Kim Ryeowook promised herself that she will change yesung and if possible, make him fall in love with her. Will she succeed? With more dramas await her, it seems almost impossible...