Several months after moving to the countryside to live with his stepmother, a man comes home early one day and catches her cleaning the house completely naked. His heart races at the sight, but when he returns later, the stepmother is dressed as usual, leading him to believe he must have imagined it. Then one night, he finds his wife and stepmother drinking together in the stepmother's room. Gradually, the stepmother begins undressing—until she is entirely nude. Surprised, the wife asks her about it, and the stepmother reveals she pretends to wear clothes normally but actually lives her daily life completely naked. Shocked by this revelation, the man senses their relationship is about to take a new and intimate turn.