Set against the backdrop of the Chinese Civil War, the film tells the story of a secret agent named Lin Xi. Lin Xi, a covert operative working for the Communist side, is tasked with rescuing a fellow spy codenamed "Green Snake" who has been captured by the enemy. His mission is to help "Green Snake" deliver crucial defense plans of Jinzhou city to the People's Liberation Army outside the city, thereby supporting the assault on Jinzhou.
| Actor | Role |
|---|---|
 Wang LongzhengNot listed | Not listed |
 Yang HaoyuNot listed | Not listed |
 Liu EnshangNot listed | Not listed |
 Zheng QingwenNot listed | Not listed |
 Zhao YiNot listed | Not listed |
 Hou ChangrongNot listed | Not listed |
 Wang BoqingNot listed | Not listed |
 Yu LeiNot listed | Not listed |
 Wang ZhaoNot listed | Not listed |
| ZZhang HaosenNot listed | Not listed |
 Nan SikaiNot listed | Not listed |
 Xu FengNot listed | Not listed |
 Gao KaiNot listed | Not listed |
 Qiao JingwenNot listed | Not listed |
 Zi FuerNot listed | Not listed |
 Zhang ZheNot listed | Not listed |