A night of celebration turns into a dangerous game when a young wife returns home drunk from a birthday party. Her husband disapproved of her going out, but her father-in-law encouraged it, secretly watching as she changed clothes in her room. Later that night, she stumbles home unable to find her keys, and her father-in-law opens the door. In her intoxicated state, she hugs and kisses him, and he cannot resist his urges. He sneaks into her bedroom, undresses her, and has sex with her while she is barely conscious. Afterward, he dresses her and quickly leaves, leaving no trace of the encounter.
Another story unfolds as Aoba comes home from a company party completely drunk. Her husband helps her change clothes but refuses her advances for sex, telling her to sleep instead. In the middle of the night, his father creeps into their room. When the husband wakes to use the bathroom, the father hides under the bed before climbing back onto the mattress to have sex with his sleeping daughter-in-law. Both husband and wife are too drunk to notice what happens next. Aisaki's story follows a similar pattern: after a farewell drink with colleagues, she returns home to find her husband already asleep. Her father-in-law pours her water while eyeing her body, then later enters her room to fondle and rape her while she sleeps.
The final tale features Sakura, who comes home tipsy from drinking and collapses onto her father-in-law on the couch. He helps her to bed but cannot control himself after having two beers himself. In the middle of the night, he enters Sakura's bedroom and gropes then rapes his sleeping daughter-in-law before covering her with a blanket and slipping away unnoticed. These four stories explore taboo family dynamics where drunken vulnerability leads to secret sexual encounters between fathers-in-law and their daughters-in-law.
