In the future world, AI is highly developed, but it is always difficult for people to guess. Where there are people, there will be crime, and where there are people, there will be conspiracies. But now, Situ Liuyun of Huashen City will fight against criminals in this city in the name of justice! During the day, he is a thoughtful detective, and at night, he is the "Detective Man" who makes all bad guys fearful.