"Hey! Stop it!" Yuko and her son Ryota are always fighting. A casual remark deeply hurts Ryota, and he opens his body to her in revenge. Strangling, deep throating, a fixed vibrator... Yuko is trained to be an obedient masochist, and her pride is crushed. Her thoughts melt with pleasure, even as she resents the humiliation. Yuko is overwhelmed by the unacceptable reality that she hates but also feels frustrated, and she gradually becomes obedient...