Three years into their marriage, a couple reluctantly agrees to take in and care for the husband's father. Yui, the wife, becomes increasingly troubled by her father-in-law's lewd stares. When she tries discussing it with her husband, he ignores her concerns, allowing the father-in-law's behavior to escalate further. One day, she finds him moaning in his sleep, seemingly dreaming of his late wife. Deeply shaken by the incident, Yui makes a bold decision to ease her father-in-law's loneliness.