Yuko is unsatisfied with her husband alone and begins turning to her only son. Her intense desire is met by her son, and their bodies prove to be perfectly compatible. Falling into forbidden mother-son incest, they grow increasingly intimate every day, continuing their secret trysts. Just recalling the pleasure makes her wet. Yuko grows more aroused by the day, actively seeking opportunities to be alone with him. Her craving for sexual pleasure pulls her deeper and deeper into this taboo relationship.