Kousaku Hata, an idol-obsessed fan, is crushed when his favorite, Yuka Kusakabe, abruptly announces her retirement at the pinnacle of her career. As Yuka's biggest admirer, he finds the news too tough to stomach. He descends into sadness and isolates himself since he has been shaken to his core. However, on the day his buddies persuaded him to return to school, he receives a nice surprise. It comes out that his favorite idol, Ringo Kinoshita, has transferred into his class. This remarkable transformation gives Kousaku renewed zeal, and he dedicates himself to seizing the once-in-a-lifetime chance. Kousaku strives hard to become close to the girl of his dreams, with the help of his instructor and friends.