Husband hires a sex masseuse to test if his wife is promiscuous. The therapist initially intends to give the naive wife a regular massage, but is surprised by how intensely responsive she becomes, unable to resist the stimulation and climaxing repeatedly. She experiences pleasure through electric brush massage, eventually accepting the masseuse's penis and experiencing pleasure once more. Two weeks later, she returns to the clinic seeking "treatment" with the penis. Filmed riding him in cowgirl position, her cute face contorts in ecstasy as she climaxes. Overwhelmed, she exclaims this is "the most pleasurable sex of my life," climaxing yet again.