The suspect in the Jiangcheng tobacco smuggling case, Mad Dog, was killed at home. Detective Chen Yongren and his disciple Han Tianzheng accepted the case. However, at the beginning of the investigation, Han Tianzheng was deeply involved and was identified by Chen Yongren as suspected of committing a crime, so he was asked to release himHand this case. During this period, Han Tianzheng discovered that Director He Chen was the real mastermind behind the tobacco case. Just as he was planning to further investigate, he was suspended by Chen Yongren and wanted by the director. Faced with numerous obstacles, HanHow will Tianzheng respond? Can the truth of the case be fully revealed?