A girl who secretly bought an aphrodisiac visits her neighbor's house to try it out. After he ejaculates and rubs the aphrodisiac on his soft penis, he is forced to have an erection in no time. He asks if he can do it again, and inserts it, ejaculating repeatedly while the man is confused. After learning of its effectiveness, the girl's friend also tries the aphrodisiac on the man. Excited by his erect penis, he ejaculates repeatedly again. The two sluts decide to try it again, forcing him to have an erection and ejaculating repeatedly.