In the upscale district of Minami-Aoyama, a discreet oil massage parlor has been gaining attention through online word-of-mouth. Drawn by internet rumors, married women keep arriving one after another, curious and eager. At first glance, the place looks like an ordinary apartment-style spa, but it hides a surprising secret—the therapists are men. Though initially shocked, the four married women quickly find themselves captivated by the masseurs' smooth talk, skillful fingerwork, and sensual hip movements. Overcome by pleasure, they gradually let go of their shyness and surrender to the sensations. As the special treatment unfolds, the true nature of this exclusive course slowly reveals itself.