The story takes place in the last years of the Qing Dynasty, when the great detective Sherlock Holmes (played by Fan Eilly) and his assistant Watson (played by Xu Zhongquan) came to China to play together and stayed at the Xianlai Inn.
| Actor | Role |
|---|---|
| AAlex VanderporSherlock Holmes | Sherlock Holmes |
| XXu ZhongquanDoctor Watson | Doctor Watson |
| XXiulan LimeiFurong / Fu Yong | Furong / Fu Yong |
 Wang ChiJin Mazhang | Jin Mazhang |
 Zhang ChunzhongTu Wu | Tu Wu |
 Wang HongtaoWencai | Wencai |