Shiori, a troubled housewife at night, overhears her neighbor talking about them on the phone. Frustrated and sexually unsatisfied, she starts masturbating... After climaxing, her gaze falls upon the open window and her neighbor's face. Angry Shiori, the neighbor Mitsui explains that he had no ill intent, and the phone call was unrelated to her husband and wife talk. Two people who were never supposed to intersect become intense lovers, sweating profusely in their affair, all because of this witnessed act of self-pleasure...
