Hitomi is a clean-cut but deeply perverted 33-year-old wife whose only hobby is filming herself masturbating after her husband leaves for work. Today she eagerly tries a new self-bondage rig with her favorite vibrator and wand. The pleasure is so overwhelming that she loses her strength, cannot release the restraints, and passes out through forced, endless orgasms. When the married man next door comes by, he is shocked to find her naked, bound, and unconscious, and tries to help—but the encounter soon becomes sex.