The story of Haidu City Criminal Investigation Captain Lin Yu and his team solving a series of complicated cases. Starting from the murder case of Li Qiang in Xianghe Community, Lin Yu peeled off the cocoon and gradually uncovered the huge criminal network hidden behind the case. First, the suspect Zhao Peng was identified, and then the crime of Liu Hu, the leader of the underground casino, was discovered during the investigation. Later, Wu Feng, who had colluded with multiple criminal gangs, and an international smuggling group were implicated. Faced with heavy fog and cunning resistance from criminals, Lin Yu and his team relied on wisdom, courage and firm belief to fight against evil and protect the peace and justice of the city.
