Risa's husband has two fathers: Edojii, his biological father who gave birth to him, and Yamaoji, the man who raised him. When Risa visits her husband's family home, she immediately becomes entangled in an incident—Yamaoji falls ill and demands she provide care. But this is no ordinary caregiving; it's merely a pretext for him to sexually harass her. Upon learning of this, Edojii becomes sexually interested in Risa's body, and as both elderly men begin imposing their selfish desires, Risa is forced into a desperate struggle filled with anguish and resistance.