Ryoko, a wife who has been married for 13 years but has not been blessed with children, works at a family restaurant in her free time during the day. One morning, she wakes up to find countless rope marks etched onto her body. Unable to confide in her husband about the rope marks, which she has no recollection of, she is terrified. A few days later, she hears something unbelievable from Tomita, a colleague at her part-time job. Ryoko vaguely remembers drinking with Tomita the night before the rope marks appeared. "...