Rambo, a Vietnam War veteran, unable to integrate into American society after years of trials in the Vietnam War, returns to his hometown. There, he faces constant nitpicking and unreasonable accusations from the town's sheriff. In the end, he can no longer endure it. He stands up to face the sheriff's provocations and also confronts the large number of SWAT officers summoned by the sheriff. Rambo uses the military knowledge that he often applied in Vietnam to fight against them. Except for the colonel he respects, nothing—no person, no law, no weapon—can stop him.