Oh Sehun, a graduating student of SM Academy experienced a heartbreak when he was in junior highschool and after that he promised himself to never to love again and never to believe in love. Chen his bestfriend, witness everything and was also there when Sehun promised to never love again and ever since that time all he did was to help his

Kris: Graduating college student, taking the course of business, have two closest friends, Lay and Luhan

Lay: 2nd year college student, taking the course of teaching dances

Luhan: Graduating college student and also took the same course as Kris

Xiumin: Same as Kris and Luhan, took the course Culinary

Sehun: A graduating student in SM Academy, his best friends are Chen and Xiumin

Chen: also a graduating student of SM Academy, the troll of them all

SM Academy have it all and the best quality school there is, so that's why they are all graduating from the same school but seperated in different buildings