Kokoro had good grades at school and was doted on by her parents. Then a tutor came to her house. Kokoro pretended to be a good girl in front of her parents, but her parents mocked her for her low academic background... And finally, the tutor's revenge begins... Kokoro's body is deprived of freedom by a hypnotic ray. She resists, but is violated in front of her parents, and her deep psychology is exposed through further hypnosis.