Married for thirteen years and unable to have children, wife Ryouko passes her empty daytime hours working at a family restaurant. One morning, she wakes up to find countless rope marks etched all over her body. She feels a vague memory stirring, but cannot understand how these marks came to be. Too afraid to confide in her husband, she trembles in fear and anxiety. A few days later, her part-time coworker Tomita says something unbelievable. Fragmented memories return of drinking with Tomita the night before the marks appeared. Ryouko trembles and whispers, "It wasn't a dream after all? Could it be... you tied me up..."