Ayaka is a strict teacher, but secretly enjoys affairs with her students behind the scenes. If this fact were discovered, her family would fall apart and she wouldn't be able to be a teacher anymore. Ayaka has been carefully concealing her relationship with her student and keeping it a secret. However, recently, her student has started seeking a relationship even within the school grounds, seeking thrills. Ayaka desperately tries to calm her down and stop her student's rampage, but she can't resist the intense caresses... Eventually, Ayaka herself becomes captivated by the thrill and sense of transgression of having sex within the school grounds.