The inner conflict of a married woman torn between shame and taboo desire. Caught between her husband's cuckolding fantasy and her own anxiety over being intimate with another man, Nai agrees to be taken by another at the request of a swapping club organizer. Married for two years with no children, she seeks to understand her husband's fetish while admitting to her own latent curiosity about sex with other men. Shy by nature, she becomes soaked with arousal when stimulated. Upon penetration, guilt overwhelms her and she cries out, trembling uncontrollably. Two weeks later, when taken again, her torment intensifies—her body writhing more violently as the divide between her heart and flesh deepens.