On June 14, 1995, Nanhe City Criminal Police Brigade, Luo Zhengnan and Ji Ke, under the appointment of Commander-in-Chief Zhang Jiayi, took charge of the anti-gangster "Wolf Hunting Operation" and successfully arrested Wu Jiancheng, the leader of Nanhe City's largest drug trafficking group. During the escort process, other party members kidnapped Wu Jiancheng, and failed to arrest him for the next two years. On March 17, 1997, the leader of the arrest team, Luo Zhengnan, and his family were killed in a tragic manner at home. This led to the establishment of the March 17 massacre. At Luo Zhengnan's home, Zhang Jiayi, who was inspecting the scene, discovered the child's cry, and then found two-year-old Luo Keyu blocked in the back of a cabinet full of medicine. After investigation, it was found that Luo Keyu's body contained residual lidocaine hydrochloride, an anesthetic. A week later, the Zhang family sent the children to an orphanage in Pilong County. Wu Jiancheng changed his name to Wang Jiancheng and settled overseas. . .
Many years later, Luo Keyu was adopted by a civil servant couple, and then joined the criminal police force, repeatedly solving strange cases... Subsequently, Luo Keyu's life experience and the police station's secret plan gradually came to light.
Purpose: The people's police sacrifice themselves for others to safeguard justice