Lee Donghae is a well known all-around guy, he is popular in school he belonged to one of the most popular clique in campus being known as Cho Kyuhyun's best friend who is a son of a bank magnate and also a fiancé of Lee Sungmin son of Lee Sooman one of the most influential CEO in Korea. But behind his handsome and cold facade lies a secret, he is not part of a rich family, his scholarship was due to being a part of Track and Field team in his school and a guy with a horrible past which driven him to vengeance. How? Being Cho Kyunyun's friend whose father is responsible for the suicide of his father and leaving him and his mother alone due to bankruptcy

In his quest for vengeance of destroying the man who trusted him the most, his goal is to make him suffer not only financially but emotionally by stealing his fiancé. But in his journey filled with rage, anger and revenge he would meet Lee Hyukjae a music prodigy and son of a famous pianist who would soften his hardened heart and will keep his sanity in his brink of revenge. In the end will he accomplish his goal or will Hyukjae's love be enough for him to stop all his plans against the people that had hurt him?