Kouichi Takahashi, known as the "married woman killer," teams up with mature, physically imposing actor Hoshiya Hito to visit a beautiful young married woman along the Tama Monorail line. Feeling starved for affection from her husband, she is gently courted by Hoshiya as a lover would, while Takahashi works to uncover her latent masochistic side. During this one-day double date, the married woman becomes entranced by sex with men other than her husband, gradually revealing sides of herself she's never shown her spouse. Through their contrasting approaches, the two men seduce her in tandem, profoundly shaking both her heart and body.