Asuka lives with her husband Takashi's father-in-law and Takashi at his parents' house. When Takashi goes to work, Asuka is always alone with her father-in-law during the day... Asuka trusts her kind father-in-law. However, her father-in-law knows that Asuka has a low tolerance for alcohol and easily gets drunk. Then, one day, he secretly gives Asuka some alcohol and rapes her while she is staggering... After that, Asuka loses her memory and is filmed by her father-in-law writhing in lust, and she ends up spending her days at the mercy of her father-in-law's desires...