Saeko, married to her timid husband Yasuo who constantly lives in fear of his wife's disapproval, regrets her current life. In the bedroom, Saeko takes complete control, but Yasuo's fearful hesitation renders him ineffective, leaving her sexually unfulfilled. To satisfy her desires, Saeko seeks intimacy with other men. Worried about the struggling couple, Saeko's nephew Kazuyuki frequently visits their home, trying his best to mediate and improve their relationship. One day, feeling pity for Yasuo's pitiful state, Kazuyuki urges Saeko to mend her ways and fix their marriage. However, Saeko surprises him with an unexpected proposal, leaving Kazuyuki utterly shocked by the sudden turn of events.