Misuzu is an inconspicuous girl in her class. After school, she comes to her uncle's house on an errand for her father. The two are happy to meet again after a long time, but her uncle can no longer suppress his overflowing sexual desire at the sight of Misuzu, who has grown into a cute girl. Little by little, her uncle's touch becomes more and more erotic, massaging her breasts and crotch... At first, Misuzu is confused, but gradually she realizes that she is getting excited...