Kim Namjoo and her other 5 bestfriends lived at America for a long time and went back to their hometown, Korea when they are entering the university at Seoul. There, Namjoo met 2 popular guys who love her, Do Kyungsoo and Luhan. Almost Each day, Dyo and Namjoo spent together and each day, they fall for each other deep and deeper But, Their love started being complicated as Dyo found out Namjoo's secret...