Yuko Matsui is a twice-divorced unfaithful wife whose ex-husband ran away because her sexual desire was too strong. She was living peacefully with her remarried husband and two children, but as her sexual desire grows, she loses all sense of reason and becomes a lewd mother who even seduces her sons' dicks! She makes her eldest son, who was peeking at her masturbating, cum with a titty fuck and handjob, and then she teases her second son by giving him a boob job, 69, and cowgirl position for incest! The sons run away when their mother begs for their sperm, but then she begs for her husband's dick and they have two consecutive creampie sex sessions! But the mother's abnormal sexual desire doesn't end there!