Three years ago, criminal police officer Lu Zhengyang was framed and suspended for investigating a high-level murder case, and became a laughing stock in the police industry. Three years later, a headless corpse led to a series of unsolved cases. However, he was marginalized and solved hundreds of cases in the dark. All the evidence pointed to the mastermind who framed him. New detachment leader Song Zhiyuan went from resisting to joining forces, forensic doctor Meng Yao used technology to break the situation, retired master Zhou Haisheng risked his life to protect him, and deputy director Fang Yunhe's conspiracy gradually surfaced. When the "abandoned police" unstoppably approaches the truth, the entire police world is shocked.
