Sayuri has been having an affair with her former co-worker, Osawa, who is much older than her, without her husband's knowledge. Today, they are meeting secretly at a hotel. "I'd like to have a nice, long meeting with you, Sayuri..." Hearing Osawa say this, Sayuri makes up her mind to do something. It's a bold plan to invite Osawa to her house two months later on "Father's Visit Day," when both her husband and son will be away from home... And on the day itself, her husband and son go out for "Father's Visit Day," leaving Sayuri, who has been feeling nervous since the morning, behind...