Akiho, an ordinary housewife, was happily married with no particular complaints in her life. However, everything changed when her husband went on a business trip. A stalker posing as a delivery man suddenly appeared, followed by her seemingly kind brother-in-law. Left with marks of bondage as proof of her traumatic experiences, Akiho shuts herself emotionally, wishing her husband would never find out. But this desire to keep secrets becomes a trap that drags her deeper into darkness.