Sara is too sensitive and comes quickly. When Sara comes, the couple's sex is over and they stop. Her husband is not satisfied with their married life, and one day, he bumps into a man from his former part-time job and they go drinking together. However, Mine is excited by the drunk Sara's defenseless eroticism and rapes her. However, despite being raped, Sara feels an indescribable emotion. On another day, Mine continues to have sex with Sara. Sara becomes trapped in a quagmire. When Nobu comes home from work, he witnesses Mine and Sara's relationship, but he is too timid to say anything. Sara gradually changes as she has sexual relations with Mine. Although she was unable to tell him about her relationship with Mine, her husband was frustrated by Sara's intense changes in behavior, but he became addicted to Sara's sexual acts...