My junior high school friend Yang Yuwen went to high school in another city, but was subjected to campus violence because of her identity. She committed suicide by jumping off a building and sealed my memory of her. Her adopted puppy Pippi wanted to avenge her. With the help of Zhang Ziqi, a bystander of school violence, Pipi possessed the little boy and used his soul to make the person who used school violence against Yang Yuwen insane. Finally, he committed suicide and jumped from the building. As the mastermind of the campus, Huo Xiaomin, Pipi, Zhang Ziqi and Zhang Huan discussed and decided to let Yang Yuwen's soul possess Xiaomin.