After the sudden death of her mother-in-law and her beloved career ending in retirement, Nana's previously kind father-in-law began drinking heavily during the day and started making advances toward her. For Nana, being alone with her father-in-law during the day became an endless torment. Yet, as he was still a close family member, she had no choice but to endure the hardship no matter how painful it became. Then one day, her secret—her adult toy, which she had been enjoying in private without even telling her husband—was discovered by her father-in-law.