Aimi lived with her husband and her father-in-law who needed nursing care. One day when her peaceful daily life continued, her husband protected Aimi and became a person who died in her accident. After that, she started living with her father-in-law, but the loneliness of losing her son causes his father-in-law's personality to distort. Her hidden metamorphosis was also revealed, and Aimi was gradually eroded by her father-in-law's sexual runaway.
