As a new trainee at SM Entertainment, Kyungsoo has a hard time adjusting. His quiet nature and kind heart make him a target for bullying and he is forced to become stronger in order to survive if he wants to debut. When he is finally placed into a group, his first meeting with one of his fellow group members turns out to be pretty rocky. Fortunately, someone steps in to help him out, and he's pleased to discover that person is also in the same group. 

Alone. Do Kyungsoo preferred it this way. After losing his daughter and coming so close to losing his own life as a result of his attempts to escape the chains of his past, he vowed that he would never involve anyone in his dangerous lifestyle again. However, after a while of tailing Choi Jooyoung, the man who stole everything from him, he's forced to break his promise to himself in order to save the life of a