Rika is a married woman who lives with her husband in a small apartment in Tokyo that she bought on credit. One day, a man calling himself Kudo visits her. Kudo claims to be a door-to-door aroma salesman and recommends that she buy a new product. Having been told that the one-week trial period is free, Rika Rika the acceptance form. However, when Kudo comes back to visit her later, he tells her something unexpected. "The price for the aroma is 1.2 million yen. If you can't pay it, you'll have to work as a prostitute."