Five married women, hearing rumors of "incredible effects and countless repeat customers," unknowingly find themselves visiting a disreputable oil massage parlor. As the treatment progresses, the skilled hands of the masseurs gradually awaken their primal instincts. These mature wives, their bodies glistening with oil, become increasingly sensitive and responsive, surrendering to the sensations. Lost in ecstasy, they instinctively react to every touch, their desires fully satisfied by the masseurs' expert techniques.