Daisuke witnesses his mother cheating on him. As a son, Daisuke cannot forgive his mother and decides to control his mother's sexual desire. Daisuke urges his rebellious mother to reflect on her actions by punishing her with a creampie. However, instead of showing any signs of regret, Daisuke escalates his training as she becomes more and more lascivious and obscene. He overcomes her rebellious spirit with endless oral sex and deep throating, and forcibly inserts his penis into her. No matter how much she cries and begs, the humiliating life of a human urinal never ends, and the strong-willed mother falls into a mere slut...