High school student He Huan has been bullied for a long time and became the number one suspect after the bullies disappeared one after another. During Uncle Hat's interrogation, she mentioned that she had been mentioned in the past. As Liu Ting and Meng Ziqi left one after another, a fire broke out in class two (three) of high school, causing damage to the entire class. The truth gradually emerged - this was a trap set by Shen Xue, Shen Mengmeng's sister who had been bullied and left, and He Huan quietly helped.
