One day, Satomi, a new teacher, visited the house of Hiroshi, a student in her class who was refusing to go to school. - The school had previously abandoned Hiroshi because of his problematic behavior at school, but despite the opposition of his fellow teachers, he came to visit Hiroshi at home. - However, as soon as Hiroshi welcomes Satomi, he makes her drink tea containing sleeping pills and sets her up. - Satomi's father, Koji, a yakuza, and his thugs appear in the middle of the act, and the three of them attack Satomi.