Maki Hojo, a popular adult video actress, is invited back to her alma mater as a guest lecturer. As one of the most famous graduates, she uses her experience to teach students the importance of sex education in an intimate and shocking way. The boys learn about sexuality up close, observing her body as she demonstrates with her own flesh. She even uses a student's erect penis to explain the mechanism of ejaculation, culminating in a graphic finale where she deflowers a virgin using her mature vagina. This three-day documentary captures Maki Hojo's intense and explicit lessons as she passionately and provocatively instructs the young boys.