A young couple moves in next door, and the wife has returned to her parents' home for childbirth. The neighborhood is mostly elderly residents who help one another through daily life. One day, she asks the neighbor's husband to replace a ceiling light bulb, and unexpectedly experiences pleasure from a vibrator he uses on her, gradually becoming addicted to the sensation. She begins inviting him over daily, deepening their affair. When her own husband discovers the infidelity, he punishes her by using a collar and blindfold to dominate and humiliate her.