An amateur wife's hesitation and shyness are drawn out in bold situations she would never experience in her ordinary married life. Gradually losing her sense of modesty at home, she rediscovers it through these new experiences. It begins with the simple act of removing her underwear, then progresses into increasingly humiliating acts—walking through an alley exposing her breasts, manually expressing breast milk, masturbating in a crowded restaurant during lunch hour, and exposing herself on a train. The married woman's body trembles with shame, captured in intimate detail as her emotions intensify.