Qingning, a beautiful coastal city, was broken by several unexpected events: the family of Qiao Huaming, a famous entrepreneur and philanthropist in the city, disappeared mysteriously one after another. The Municipal Public Security Bureau attached great importance to this, and the investigation team headed by the criminal police captain Lang Xing quickly launched an investigation. Detective Lang Xing is bold and careful, wise and brave, but the suspect is also extremely cunning, and a thrilling cat-and-mouse game is staged. As the New Year is approaching, in order to maintain social stability and reassure the people, the director issued an iron order that the case must be solved before the New Year! The investigation work finally made a breakthrough. However, many pieces of evidence locked Lang Xing's brother Lang Kong as the first suspect! This made him really unacceptable, but he had to perform his duties as a policeman. In the end, just when Lang Kong was about to go on a road of no return, Lang Xing appeared in time. At this time, Lang Xing also knew that Lang Kong and himself were not brothers from the same milk, and Lang Kong's confusing life experience involved a deep grudge between him and Qiao Huaming. Faced with justice and family affection, Lang Xing was extremely entangled in his heart, but he resolutely chose the former. In the name of the people’s police, he defended the dignity of the law and ensured that justice was served!