Kousaku Hata, a self-confessed idol hunter, is devastated to learn that Yuka Kusakabe, his favorite, has announced her unexpected retirement at the height of an impressive career. This news is more than Yuka can bear, as he is Yuka’s greatest fan. He is shaken to the core and sinks into depression. He then isolates himself. He is pleasantly surprised when his friends convince him to go back to school.
His beloved idol, Ringo Kinoshita (under the guise) has now transferred to his class. Kousaku is filled with joy and determination after this amazing development. He will take the chance to make the most of this once-in-a lifetime opportunity. Kousaku, with the help of his teacher and his friends, works towards finding the reason behind his girlfriend’s retirement from the entertainment business.