Atsushi has been in and out of hospital since he was a child, due to his frail health. Recently, his condition has worsened to the point where he can no longer walk on his own. His mother, Reiko, does her best to look after him, but while wiping her son's body, who cannot move freely, she sees his fully grown penis. The smell of a man emanating from her son's large, erect, hot, steamy penis awakens her in her sleep, and Reiko can't help but take it in her mouth...