Sohyun just came back from California to continue her studies in Seoul. Actually she doesn't have any interest at bussiness management. What she wanna do is Music. She wanna sing, she wanna dancing. But, her parents say no. So, they take back Sohyun to Seoul, and give and gave her an private teacher to help her in bussiness management. Sohyun then meet her childhood neighbour who used to be very close with her. She was suprised to see him grow up like real men! So, she grew some feeling for him. Meanwhile, her childhood neighbour, Yoon Doojoon, just think her as his little sister, eventough he a little suprised to see her as an beautiful woman. Meet Gayoon, Sohyun's private teacher who very care about Sohyun life. She feel some guilty towards Sohyun who can't follow her dreams because of her parents. Secretly give Sohyun vocal lesson when Sohyun's parents are not around. Feel love at the first sight towards Doojoon but, keep her feeling for herself, because she know that Sohyun have some feelings toward Doojoon. Meet Dongwoon, milk courier who never give up to his condition. He is life alone in Seoul. His parents already pass away years before. He saw Sohyun for the first time when he saw her singing with her guitar infront of her house. He suddenly grew some feelings for her. But he keep as an secret admirer because he doesn't have any confident because their different social status. Love, hate, friendship. Some still searching their real heart, some already found it, but doesn't realize it.