Walnut, a high school girl, has come to a hotel in a rural town. Every summer, it was a regular event for her to visit the hotel run by her father's friend, but this year her father couldn't make it, so Walnut came alone. Walnut out at the hotel without any suspicion. However, in reality, she was sold to the perverted old man at the hotel because of her father's debts. Unaware of this, Kurumi is attacked and trained with Walnut. The perverted old man rapes and plays with her while she cries. In the midst of these abnormal days, she continues to believe in her father, but...