A bullet case engraved with "TH-0712" reappeared at the pier on a rainy night ten years later, tearing open the bright surface of Haishan City. Ling Zhong, the former criminal investigation detachment leader, was reactivated to form the "Shadow Hunting" special investigation team - which appeared to restart old cases, but was actually an abandoned piece on the power chessboard.
The five members of the team: "Rock" in the police force whose faith has collapsed, "Ghost", an undercover agent whose identity is a mystery, "Key", a technical genius who avenges his father, "Iron Fist", a violent and impulsive special police officer, and "The Ghost" who can't help himself. What they face is not only Long Xiaotian, a powerful scholar who covers the sky with one hand, but also the power network of the top police officers that has long been symbiotic with darkness.
When the investigation deepens step by step, they discover that the enemy is in the command room; when secrets of the operation are repeatedly leaked, they have to stage a cruel test of trust on the riverside; when bullets are shot from behind, they must make a choice: should they continue to wait for trial in the corrupt rules, or should they break everything and become "shadow law enforcers" who walk on the edge of black and white?
This is a war without reinforcements, a complete betrayal and reconstruction of faith. When the "rock" decides to turn into a "blade", the final battle under the undercurrent has just begun...
Purpose: Solve crimes