"Because my wife's sister-in-law is too erotic..." Frustrated married woman Saki and her sexless sister's husband go crazy to the point of embarrassment Saki Okuda

The movie revolves around Saki, a frustrated married woman, and her interactions with her brother-in-law, whose wife is depicted as being uninterested in him. As the story progresses, it explores themes of marital dissatisfaction, loneliness, and the complexities of human relationships. The central dramatic tension arises from the emotional connections and desires that develop between the characters, leading to a series of intimate and revealing moments.