Ai Kwana innocently adores her uncle, yet at the same time, she becomes aware of his lustful gaze and hidden desires toward her. One day, after taking a bath together for the first time in a while, she notices him erect and begins to grow curious. Seizing the opportunity, her uncle takes her virginity. From then on, he loses all restraint, repeatedly filling Ai with creampie after creampie, until she gradually loses control of her own body without even realizing it.