inspector luo qiuheng of the police station judged that hu yunlang died of arsenic poisoning, so he took the maid xiao taozi away for investigation. although she was removed from the suspicion, xiao taozi was still fired by the hu family. seeing that she was smart, su wenli took in xiao taozi, and xiao taozi became her maid, best friend and detective assistant. the cleverness and insights shown by su wenli in the analysis of the case made inspector luo deeply impressed, so the two formed a golden partner and joined forces to solve a series of bizarre cases.
