In this adult classroom role-play, popular teacher Riri Nanatsumori has two gifted chemistry students who secretly give her an extremely powerful aphrodisiac. After several days she collapses in class, dazed, burning hot, and soaking wet. The students take her to the infirmary and satisfy their desire by having sex with her, then make the drugging and sex routine. With only hazy memories, Riri eventually finds the formula in the science club room and summons them to the classroom, setting up the reckoning for their erotic youthful mistake.