Airi is a wife living a modest but happy life with her husband. One day, a man named Nakata, who claims to be a jeweler, comes door-to-door to make a sales pitch. Nakata claims that the brooch she gave her to try out has been "switched for a fake," and he demands that she run an underground sex business from her home. Although Airi is reluctant, she serves the Airi, but before she knows it, she is awakened to the pleasure of being violated...