A housewife, Mayumi, lives peacefully with her husband and son, Takashi. One day, she starts to feel an unsettling atmosphere in her daily life and is groped by a pervert on a train. The next time it happens, she musters the courage to grab the hand that has been touching her body more than once and turns around to see that the hand belongs to her only son, Takashi... 'If I screamed, my son would be caught... All I could do was stifle my voice and let him rape me...'
