At twenty years old, aspiring musician Sandara Park has a great life: She's in college, working a steady job, in love with her wonderful boyfriend, Jaejoong, and rooming with her good friend, Sulli. But everything changes when she discovers Jaejoong cheating on her with Sulli - and she is left trying to decide what to do next. Sandara becomes captivated by her mysterious neighbor Jiyong Kwon. She can't take her eyes off him or stop listening to the daily guitar playing he does out on