In a mom's volleyball game, a housewife named Suzu, whose body is completely exhausted, receives treatment from a skilled masseuse named Sawabe. The massage proceeds healthily, but contrary to this, Suzu's body reacts with tremors and waves. Because she had only bland sexual life with her husband, she had become sensitive to even slight stimuli. Although there was no ulterior motive, as the treatment progressed, Suzu's reactions, which leaked sighs and boldly twisted her hips, wetting her crotch with heat, began to drive Sawabe's rationality into madness.