Yuka Kusakabe's sudden retirement has left Kousaku Hata feeling devastated as she was his favorite idol. As a huge fan, this news is more difficult than he can bear. Shaken to his core, he sinks into depression and isolates himself from others. On the day that his friends managed to convince him to attend school again, Kousaku receives a pleasant surprise when he discovers that Ringo Kinoshita, who he believes to be his idol Yuka in disguise, has transferred into his class. This miraculous development fills Kousaku with newfound resolve as he dedicates himself to take advantage of this once-in-a-lifetime opportunity. With the support of his teacher and friends, Kousaku works towards getting close to the girl of his dreams and uncovering the reason for her retirement from the entertainment industry.