The case of the murdered taxi driver remains unsolved. Now another case involving a burned body turns up in Sancha River. Similar methods and a bizarre license plate clue link the two cases. As Detective Zhu Jinling investigates, he discovers that the victim in the arson case has been misidentified, leading him to unlicensed cab drivers Xiang Biao and Shen Xiaoxin, as well as Luo Hong, a car owner from the provincial capital.
Xiang Biao appears to be helping with the investigation, but is actually pulling the strings. Shen Xiaoxin harbors suspicions of murder, while Luo Hong has set a trap to frame someone else. As the truth is gradually revealed, the disorder of the unlicensed taxi business and the greed of human nature are laid bare.
In the end, before his transfer, Zhu Jinling sets a trap. Evidence in Shen Xiaoxin's old car breaks through his psychological defenses. Even when Xiang Biao causes a car crash, Zhu uses a backup dashcam to secure the evidence and protect justice with his life, ensuring the real culprit is brought to justice.
