David Locke is a world-weary American journalist who has been sent to cover a conflict in northern Africa, but he makes little progress with the story. When he discovers the body of a stranger who looks similar to him, Locke assumes the dead man's identity. However, he soon finds out that the man was an arms dealer, leading Locke into dangerous situations. Aided by a beautiful woman, Locke attempts to avoid both the police and criminals out to get him.

Many times during his presidency, Lyndon B. Johnson said that ultimate victory in the Vietnam War depended upon the U.S. military winning the "hearts and minds" of the Vietnamese people. Filmmaker Peter Davis uses Johnson's phrase in an ironic context in this anti-war documentary, filmed and released while the Vietnam War was still under way, juxtaposing interviews with military figures like U.S. Army Chief of Staff William C. Westmoreland with shocking scenes of violence and brutality.