In the capital during the Republic of China period, a young man Zhao Shaoshang, who loved traditional culture, suddenly had a strange case in his family. He worked with Yuan Hong, a policeman with superb skills, to quickly uncover the mystery and from then on he devoted himself to the work of a detective consultant.Although Zhao Shaoshang and Yuanhong's growth environment and educational background were completely different, they learned from each other and made progress together in the process of detecting cases. With their extraordinary wisdom and courage, they jointly solved a series of bizarre cases.

In that turbulent era, they chose to uphold fairness and justice, not only became the most powerful nemesis of crime, but also stood up at critical moments and chose to fight to defend the country.In the end, the two patriotic young people resolutely embarked on a new path of serving the country and saving the country.