Akira is visiting his new friend's house for the first time. There, he meets the beautiful mother, Eri. Akira falls in love at first sight with Eri, who is youthful and gentle, unlike his own mother, but his feelings of love are shattered when he witnesses a shocking scene. Eri has brought a stranger into her room and is committing adultery. With her son and his friend in the next room, Akira is enraged by the sight of Eri munching on the cock of a man who is not her husband...