A son worries about his mother who has caught a cold and takes care of her. However, the son gets an erection when he sees his mother naked, and from that day on, he begins to have a forbidden desire. On another day, the son catches a cold and the mother has to take care of him. While confused by her son's advice that "ejaculation seems to bring down the fever," the mother goes along with it and gives him a blowjob, but from that day on, her daily life goes awry. Then, a few days later, the son finally attacks his mother while she is taking a nap, crossing the forbidden line. "I know I shouldn't... but my son's dick feels so good..."