After learning heretical teachings about the Earth and the Sun, a child prodigy searches for his master's hidden research while evading the Inquisition.

Fuutarou Uesugi is a poor, antisocial ace student who one day meets the rich transfer student Itsuki Nakano. They argue but when Uesugi realizes he is to be her tutor, he tries to get on better terms. While trying to do so he meets four other girls.