Wife Aoi (pseudonym), 27, is a part-time worker at a restaurant with no children. After her boyfriend was transferred to Tokyo, they married and moved to the city, where she continues working at a Western-style diner with her husband. Their marriage is harmonious, cherishing time together through shopping and hot spring trips. However, while Aoi desires to have a child, her husband reveals he wants to fulfill his "cuckold fantasy" before making her wish come true. Confused and conflicted, Aoi agrees to do it just once, promising her husband it will be the only time. As a result, Aoi ends up in the arms of a complete stranger, becoming the victim of her husband's extreme sexual desire. A shocking two-day, one-night record of a married woman consumed by hidden desires and her husband's overwhelming obsession.