For Baekhyun, developing a crush is easy, since he gets attached to a person very quickly. While he thinks of it as a curse, his mother keeps telling him to look at it from the more positive side. She says that he has a big heart and lots of love to give. But can he really not consider his "big heart" a curse when his newest crush becomes Park Chanyeol, his next-door neighbour who seems to hate Baekhyun to the core with passion?

Everyone around Chanyeol talks about how love hides behind every corner, but they are all wrong. The only thing that hides behind a corner is a short who bumps into Chanyeol on a particularly busy morning and spills Chanyeol's coffee when he needs it the most.