A sexy prank show featuring Nami Shinohara pretending to work at a massage parlor. Acting as a regular masseuse, she skillfully kneads customers' tired bodies, while also carefully attending to their hardened groins. The reactions of the unsuspecting clients are captured on camera. In the second half, the prankster Nami becomes the target of a reverse prank—her hidden masochistic personality is exposed when a male actor, posing as a customer, boldly overpowers and pins her down. Unable to withstand the intense stimulation, she becomes extremely aroused, her groin soaking wet as she reacts passionately.