Hayase Misako (Oda Mako), who works part-time at a supermarket, is an ordinary housewife who lives with her son Satoshi and her serious husband. However, one day, at a drinking party at his workplace, he is invited by a young man named Kuroki, a part-time worker, and makes a one-night stand. Misako, feeling guilty yet enjoys the pleasure of a woman, once again mingles with Kuroki and falls into intense sex. Just as soon as Misako is indulged in carnal desires with Kuroki and her part-time colleague Mamiya (Otonaka Kaori), who has shaved her pubic hair as proof of her submission, appears in front of Misako...