A group of criminals call themselves the "Northern Detachment". They commit several major crimes on the Beijing-Guangzhou Railway. The Public Security Bureau sends Ma Xiaolong after them.
| Actor | Role |
|---|---|
 Li Xida宗民 | 宗民 |
 Lin Xiao Jie梅容 | 梅容 |
 Wang Ping胡飞 | 胡飞 |
| DDong Honglin马小龙 | 马小龙 |
| LLijun Sun一把手 | 一把手 |
 Ai Liya秀芬 | 秀芬 |