Kana is a schoolgirl who constantly feels lonely at school and at home. Ununderstood by anyone, she lives each day filled with alienation. One day, on the train ride home, she experiences her first molestation. Unable to cry out, she is left completely helpless, surrendering to the assault. The perverted acts grow increasingly intense, gradually stripping away her innocent heart. However, when she discovers the man's true identity is her father, she is torn between taboo and desire, ultimately changing the course of her life forever.