Thanks to a trash ex-boyfriend, Seon Ihyeon was forced to take leave of absence from school and is now returning after 3 years. Determined not to associate with men again, Ihyeon just wants to quietly finish the rest of her time at university... But now, a guy even worse than her ex has appeared in front of her - Nam Chanwoo! She wants absolutely nothing to do with him! Continually running into each other is uncomfortable enough, but to even live in the same boarding house?! Ihyeon pushes Chanwoo away, and he refuses to let her go. An anxious campus romance!