Five years ago Minako spent a night with Sozo, the younger brother of her ex-husband. Now she is married to a wealthy old man, who (though he loves his young wife) is no longer able to fulfill his conjugal duties. Consequently, Minako goes to Tokyo every three months to meet Sozo, who has married the daughter of his respected teacher. 日本老片《内海之轮》所包含的逻辑困境。他们都看错了对方。内海の輪。 年轻貌美的奈美子跟拈花野草的丈夫离婚后，改嫁富有的花甲老翁庆太郎然而她一直心系前夫的幼弟江村。二人定期幽会，但奸情却接二连三被撞破。修读人类学的江村迎娶了大学教授的女儿，一心想当上副教授。为了自己辛苦建立的名声和前途，江村决心与奈美子一刀两断。他想到要把痴缠的奈美子推下悬崖…… 本片改编自著名作家松本清张作品，有着极出色的刻划，比美《砂之器》。
