Returning home from a shopping trip to a nearby town, bored suburban housewife Laura Jesson is thrown by happenstance into an acquaintance with virtuous doctor Alec Harvey. Their casual friendship soon develops during their weekly visits into something more emotionally fulfilling than either expected, and they must wrestle with the potential havoc their deepening relationship would have on their lives and the lives of those they love.

Tamio Shibata, the wife of a career woman, and Yumi, a writer who cannot sell. The relationship between the two couples was cold. One day, Mr. and Mrs. "Shibata" with different kanji move into the room next to the apartment where Mr. and Mrs. Shibata live. Tamio Shibata, who stayed at home all day, and Asako Shibata, a housewife who became a neighbor, naturally narrowed their distance. One day, a courier arrives at Tamio. However, the package was from the Shibata family next door that the delivery staff mistakenly delivered. Tamio will deliver a courier next to him...

Two strangers, both married to others, meet in a railway station and soon find themselves in a brief but intense affair.