The sister-in-law who is about to divorce insists on having sex with me after drinking.

The film tells a taboo story within a family. The male protagonist's sister-in-law, facing marital issues leading to divorce, breaks down emotionally after a night of drinking and develops an intense sexual impulse toward her younger brother-in-law. She insists that he satisfy her once, sparking a series of incestuous developments. Through delicate psychological portrayals and passionate scenes, the story depicts the collapse of family ethics and the conflict of human desires, culminating in a tragic ending.