On the first day of a three-day weekend, a suspicious delivery man brings a large cardboard box to the home of a man named Saiji. Hesitantly opening it, he finds a letter and a naked woman (Momoko Isshiki) packaged inside. Unable to hide his surprise, Saiji nevertheless begins to assault Momoko as if she were a Dutch wife, following the request in the letter: "Please do whatever you want with your wife for three days." Later, during their conversation, Saiji learns that Momoki is his boss's wife and finds himself drawn into the couple's abnormal sexual fetishes for the remaining three days...
