Han Shi Hoo transfers to Baek Mae Ri and Jung Jæ Min's school where he makes rumors happen when he hugs Baek Mae Ri in front of the class on his first day of school! While he tries out for sports like basketball and makes everyone in the school -even Jæ Min- believe that they are dating. Shi Hoo doesn't help the rumors circulating around the two when he "accidentally" reveals that he and Mae Ri are engaged to be married by their parents since the moment they were born. Now, as the yearly 'Battle Of The Bands' approaches, Mae Ri must battle the frantic racing of her heart around Shi Hoo and the sudden confession by Jæ Min all while writing songs for the band she's in...with both of the boys.