In the movie, Zhang Yi plays the director of the school's education department, whose son Zhang Ke is a bully.Due to his parents' divorce and lack of education and attention since childhood, he developed the habit of bullying others.One day, Zhang Ke and other classmates bullied a boy in the toilet, and Han Yuchen stopped the behavior in time.

Zhang Ke is used to being arrogant and domineering. If he is provoked, he will definitely not let Han Yuchen go.As a result, a physical conflict broke out between the two parties, and Zhang Ke's nose was broken by Han Yuchen.From a God's perspective, the audience saw that Han Yuchen acted bravely and injured Zhang Ke. However, Director Zhang thought that his son Zhang Ke was being bullied, so he called the police.His only request was for Han Yuchen to apologize to his son.In Director Zhang's eyes, it was impossible for Zhang Ke to bully others at school, so he thought it was Han Yuchen who bullied Zhang Ke.Han Yuchen adheres to his principles and bottom line. He has done nothing wrong and cannot apologize.Worried about Han Yuchen's future, his parents took the initiative to apologize to Director Zhang on his behalf.However, the matter was not successfully mediated.

Han Yuchen was retaliated by Zhang Ke and was beaten.When Han Yuchen learned about this, she took the initiative to find Director Zhang and resolutely defended herself.Han Yuchen also asked his father: Is it wrong to act bravely?%The prosecutor's father didn't know how to answer.Later, Zhang Ke's campus bullying was exposed and he was punished by the school.After Director Zhang learned about his son's bullying behavior, he chose to withdraw the case. He did not protect his son.In fact, we can see from the previous plot that Director Zhang is very strict with Zhang Ke, but Zhang Ke is naturally rebellious and he does not take this matter to heart.It was not until the end that Director Zhang learned the truth of the matter and chose to kill the family for justice.