It's Jr.High school in Japan based on a true event. When one of the faculty member Mr.Mori discovers the criminal for attacking teacher was one of student of his school, his first inclination is to prompt action for checking inside of student's bag in secret to prevent the student crime. As Mr. Mori and his colleague searches the student's bags while the students are in outside, they discovers the existence of one girl who is clever, beautiful, and heatless evil. Her existence drivers teachers to the past, present, and gives a delusions. And that brings to the unexpected conclusion.