Her only son, Hideki, is a timid boy who is always bullied by his friends. Worried about her son, she tried to warn his friends and put an end to the bullying, but she fell into a precocious child's trap and underestimated him, thinking he was just a child, and the young man's desire exploded on her ripe, voluptuous, big-breasted body. Before she knew it, she was fulfilling the sexual needs of her children every day...