Everyone wears a mask, be it in school, at work, or even at home. As you get older, the masks you wear for different occasions become a part of you, and sometimes you find yourself lost, and unable to differentiate what is real and what is not.

Kim Suyeong, is 20 this year and has mastered the art of faking her way out of different occasions. Best friend? What is a best friend when everyone you know betrays you in the end? Struggling to provide for herself and dealing with problems that seem to be attracted to her like bees to honey, she loses track of herself and realizes that even she doesn't know herself anymore. As Yixing appears in her life, she didn't expect him to make an impact in her life, much less stay in it for long. But it seems like they had more in common than they thought.