Traveling massage therapist Bada Tsuyoshi is known for secretly providing sensual massages to mature women. One day, he receives an offer from a prestigious all-girls school, the Private Seika Academy. They want him to teach their students, who lack knowledge about sex, the pleasures of womanhood. The school had been offering a secret sex education course, but the previous instructor had eloped with a student. Hearing of Bada's reputation, they decide to scout him as a "sex teacher." Thus, using his experience and techniques as a sensual massage therapist, he begins his tantalizing, indecent, and busy days teaching innocent girls the joys of being a woman.