Emiko Koike plays Yoshie, a devoted wife whose husband is bedridden due to illness. To support her family, she works as an insurance saleswoman. Desperate to increase her contracts at any personal cost, she becomes vulnerable to manipulation. When yakuza thug Sekiguchi hears rumors about her "bareback pussy clause," he threatens to leak company information unless she complies. Unable to quit her job due to her husband's care needs, Yoshie is drawn into Sekiguchi's demands—plunging her into an escalating spiral of blackmail, creampie sex, and submission.