Sehun’s current roommate, Lu Han, is leaving her to live with her girlfriend, Minseok. Sehun has a dilemma: she needs to find a roommate quickly before the bills pile up and drown her in debt! But when she finds a cute girl that is in need of a home, she comes face-to-face with yet another dilemma. She develops major feelings for this girl. Too bad she’s straight…

Fraternity heartthrob Kim Jongin is single again after ending a four-year relationship with Junmyeon, a meek political science student. Junmyeon can't believe that he wasted four years on such a horndog so Junmyeon unexpectedly turns to Sehun, the charismatic playboy of another fraternity and Jongin’s childhood nemesis. Junmyeon asks