Sayuri Horiguchi, a 46-year-old woman, juggles her job as an insurance agent and raising two children alone. To cope with her hectic daily life, she relies on extramarital affairs for release, discreetly enjoying the thrill until recently. However, after turning forty, her inhibitions began to fade, leading her to engage in daring acts like having thrilling sex in her car or karaoke rooms. Despite this, she still craved more intense stimulation, eventually leading her to appear in adult videos. Witness the seductive side of this virtuous wife, a side her husband, who is unaware of her insatiable desires, would never see.