Colonel Jason Rhodes (Gene Hackman) is a man obsessed. For over ten years, Rhodes has been living a nightmare searching for his son, who is listed as “missing in action” in Vietnam. After useless appeals to the government for information, Rhodes takes matters into his own hands. With the financial backing of a Texas oil tycoon (Robert Stack) and the help of his son’s five marine buddies, Rhodes prepares to carry out a daring mission. After weeks of gruelling training, the courageous veterans leave for Laos. The final battle of the Vietnam conflict is about to begin.