Misasako Hayase (Masako Oda), who works part-time at a supermarket, lives an ordinary housewife's life with her son Satoshi and her serious husband. However, one day, after being invited by a young man named Kuroki during an after-work drinking party at her workplace, she commits a one-night mistake. Although she feels guilty, Misasako experiences female pleasure and engages in intense sex with Kuroki again. Just then, a part-time coworker, Nakanomiya (Kanashi Kaori), who has shaved off her pubic hair as proof of submission to Kuroki's carnal desires, appears before Misasako...
