When college freshmen Kim Jongwoon (Yesung) is found dead in the libaray dectective Kim Kibum investigates with best friend Lee Donghae while Yesung's girlfriend Emiko Jung is left heart broken trying to find out who killed Yesung with her gang of friends including: Micha, Kae, Chen,  Xiumin, Tao, Kris. Old and long time friend Onew joins in to help find out bring more help from his old highschool friends: Taemin, Jonghyun, Minho, and Key.