The film is based on real events, revealing that the real world does not have the truth of fairy tales. Only when we start to identify can we curb crime. Lawyer Zhang Zhengxu (played by Zhang Xiaoquan) received a commission for a sexual assault case involving a famous cram school teacher that shocked the society. He found that the suspect Tang Shicheng (played by Lee Kangsheng) was actually his client when he first entered the industry. At that time, he was employed by another law firm and accepted the boss's instructions to defend the suspect, but he seriously hurt the victim (played by Jiang Yirong). 17 years later, in order to make up for his mistakes, Zhang Zhengxu is determined to pursue his own justice at all costs.