Yin Ziyu, who witnessed the murder of his mother when he was a child, originally thought that the law would judge the murderer, but the murderer escaped the punishment of the law due to mental illness. Since then, Xiao Ziyu has been determined to become a policeman and crack down on all criminals who escape legal punishment. When he was admitted to the police academy, he found that the law he learned could not bring the worst people to justice, so Yin Ziyu embarked on his own path of justice execution.
