The beautiful and kind mother, Minami, unintentionally confides her dissatisfaction with her married life to her son. She regrets what she's complaining about to a child, but it's too late. She is attacked by her son, who decided to solve her nighttime troubles. There's no way this is allowed between a parent and child. She desperately resists, but her frustrated body throbs with every caress and is cummed on without a chance to escape, ascending to the heights of climax.