Eagerly awaiting the father's departure, mother Yumi and her son grow increasingly restless. For the two, on the brink of their limits, the father's absence means sweet release. Yet his timing is strangely awkward—he lingers around the house as if predicting their actions, torturously delaying his exit. Absorbed in reading the newspaper, repeatedly refilling his coffee, his presence only heightens their frustration. Yumi's clit rubs against her panties, her pussy wet with arousal, while her son struggles to contain his own dripping arousal. Finally, when the father leaves, their pent-up desire explodes in an instant.