The drama is adapted from the ancient costume detective suspense online novel of the same name by Master Mojian. It tells the story of a pair of temporary partners with very different personalities - Detective Su Chengxi and Constable Sui Hanbai, who teamed up to investigate a mysterious "ghost" case. At this moment, the map of the rumored mysterious treasure suddenly appeared, causing the two to encounter many obstacles in their pursuit of the real murderer. As Sui Hanbai's true identity was revealed, the brotherhood was also facing a huge test.