Maiko, who lost her husband early and raised her young son Hiroshi admirably on her own, found herself secretly tormented by desires as her son grew to resemble her beloved husband. Hiroshi, in turn, harbored more than familial affection for his mother, and they lived in mutual concealment of their feelings. On the eve of Hiroshi's wedding, with a loving touch, she tended to his manhood, saying, "Tonight only, the first and the last..." However, the pent-up erotic love that had been hidden for years propelled them into further pleasures.