Seiko Nagata's mother, living in her hometown in Fukushima, reunites with her son in Tokyo after a long time. This rare mother-son reunion brings unexpected stimulation to her mature fifty-year-old body. Despite her age, her voluptuous, bouncy figure deeply excites her son. Her carefree naps and the warm, sensual feel of her plump body during massage push her son's restraint to the edge—until he finally breaks. A passionate affair unfolds between this big-titted, big-assed milf mother and her son.