Kim Soomi is a normal pretty girl who dreams to love only one person.But bad luck came,she doesn't only love ONE but 13 BOYS.13 Boys that are bestfriends.Seungcheol,the leader,Joshua,the gentleman,Jeonghan,the pretty boy,Wonwoo,the emo,Mingyu,the visual,Hoshi,the dancing machine,Dokyeom,the funny yet stupid boy,Woozi,the shortest violent-when-mad boy,Seungkwan,the high note reacher,Dino,the youngest,Jun,the prince-like boy,Minghao,the innocent little puppy and Vernon,the 4D rapper.What'll happen is she ends up picking only ONE from them?What'll happen to the rest?Would they give up?Make way?Or keep on fighting for the person they truly love?