在敌后作战时,迈克·兰森中士得知俄罗斯在北越存在。勒索被命令获得这一发现的证据,他返回敌方领土,但被抓获并遭受各种酷刑。最终,尽管受到自己队伍中叛徒的阻碍,他还是逃脱了,继续他的使命While operating behind enemy lines, Sergeant Mike Ransom learns of a Russian presence in North Vietnam. Ordered to obtain proof of this discovery, Ransom returns to enemy territory but is captured and subjected to a variety of tortures. Eventually he escapes to continue his mission despite being hampered by a traitor in his own ranks.