Yuzu, a wife who lived a happy married life, felt something was lacking in her nighttime activities with her husband. One day, she was attacked by her lustful father-in-law who had dementia. However, despite her unwillingness, Yuzu's body reacted sensitively and she squirted! Yuzu's hidden masochistic desires were stimulated by her father-in-law's forceful assault. From then on, Yuzu began to desire sex with her father-in-law, and their affair escalated into an intense and vulgar squirting sex...