Carrol Jo Hummer returns from the Air Force to his hometown in Arizona, eager to start a new life with his wife, Jerri. He purchases a truck and takes up long-haul driving, hoping to build an honest, successful business. Soon, Carrol Jo discovers the trucking industry is plagued by corruption, with unscrupulous bosses demanding drivers smuggle illegal cargo. When he refuses to participate, he faces violent retaliation from the powerful trucking syndicate.

Undeterred and driven by a sense of justice, Carrol Jo decides to stand up against the syndicate, despite the escalating dangers. As he fights to maintain his integrity and protect his family, he becomes a symbol of resistance among independent truckers. The pressure mounts as the syndicate intensifies their efforts to break him, leading to increasingly perilous confrontations. With stakes growing ever higher, Carrol Jo faces the ultimate test of his resolve and courage.