After marrying into the family, Neiro begins a new life with her husband and her husband's widowed father. As her husband frequently returns home late, Neiro finds herself increasingly alone with her father-in-law. One day, after drinking sake he offered her, she collapses from intoxication. Seizing the opportunity, the father-in-law takes advantage of her unconscious state, forcefully violating her and mercilessly creampieing her without remorse.