A year ago, her son suddenly became lethargic. Then he couldn't move, and now he is bedridden. His mother takes good care of him. However, she is worried about his unknown illness. One day, her son calls his mother. He says he feels itchy between his legs. His mother touches him hoping it will help her feel better, and his legs become erect. She helps him ejaculate as her son tells her. A few days later, her son calls his mother again. His hands are moving. With his new hands, the son squeezes his mother's breasts, and says it is for his rehabilitation, and asks to have sex with his mother. Although the mother is troubled, she thinks it is for her son's sake and presses her private parts against his hardened legs...