In 1920s Shanghai, an infamous police officer, a genius consultant, and a resourceful journalist work together, specializing in strange and unsettling murder mysteries.
Set in the Zheng dynasty of the fantasy world Novoland, the drama revolves around a young girl of the merfolk tribe Ye Haishi; and her love story with the current Emperor, Fang Zhu.
A couple on a romantic vacation in Malaysia picks up a mysterious woman with a tragic past, and their trip quickly turns deadly.