We've been married for four years now, and although we don't have any children yet, we are living a happy married life in our own way. One day, Saki was having a class reunion at her alma mater, so I sent her off in a pleasant way, but she didn't come home that day and came back the next day before noon, only to find footage from an unknown video camera in her bag. We watch the whole story of how my beloved wife becomes lewd, and her behavior is clearly different from usual.