A massage with oil containing aphrodisiac is given to junior high school students under the pretense of a sports massage to relieve muscle fatigue. As the girls gradually lose consciousness, the masseuse's devilish hands begin to play with their bodies and penetrate their private parts. The innocent girls, who don't even know what sex is, are penetrated not only in their vaginas but also in their anuses, and experience ecstasy from their first anal sex.