Exactly how does it feel like when the only thing you dear is taken away from you? With that feeling, Lee Mina has been living far too long. Too long to smile again. She doesn't mind having a dull and tedious life, after all, it was pleasanter than how she used to live before. With no aim in life, she just wants the days to pass by until she encounters the daring and playful Kim Jonghyun, who is a "no good" for her. If she supposed that by ignoring him a few times will make him leave, then she was wrong. If she assumed that he was just a regular boy, then she was wrong. And if she believed that he was leading a perfectly fine life, then she was wrong.