The wife feels lonely because her husband is busy at work. The elderly father-in-law ends up having a relationship with the wife. The elderly man, Yamada, witnesses the relationship. The wife is threatened by Yamada into having a relationship, but her frustrated body reacts and she cries out in joy. The father-in-law is jealous of Yamada and kisses him passionately. Finally, the voluptuous, busty beauty of the wife enters into a new physical relationship with the two elderly men, having sex with them in a three-way relationship.