Fang Yuan (Jin Dong), the president of the case filing court of Xingcheng District People's Court, and Song Yufei (Wang Xiuzhu), the vice president of the Criminal Court of Rongzhou Intermediate People's Court, are both apprentices of Zhang Weimin (Zhang Zhijian), the vice president of Xingcheng District People's Court. The three masters and apprentices have dedicated their youth and blood to China's judicial cause. Now, Fang Yuan's apprentice and legal assistant Zhou Yian (Cheng Yi) has just become a full-time judge. The former master-apprentice group is now scattered in different trial positions and continues to shine. Ye Xin (Cai Wenjing), a young female cadre of the Supreme Court, suddenly parachuted in, bringing more changes to the Xingcheng Court. These three generations of court personnel have carried forward the fine tradition of the court in one case after another, and they have always adhered to the bottom line of justice, morality, and humanity.