School Idol QT Cool is an adult visual novel about three students at Hyakumangoku Academy. The Japanese birthrate is shrinking and the country is in peril. Less and less students join academies and teachers fear the worst. As such, the concept of a School Idol is created, people idolized by possible future students. As such, the enrollment starts to increase again. The concept proves to be a success. The competitive School Idol club is born with School idols from several high schools in it.