Baekhyun gets obsessed with things very easily; mostly people.  And his new obsession is Do Kyungsoo, the male who works in the bookstore below his apartment. 

When Baekhyun's score on the overall class list gets taken over by a Gryffindor named Park Chanyeol, he finds himself doing anything to seek revenge or at least get his spot back, not noticing that the taller also has a few tricks up his sleeve.