Carrol Jo Hummer (Jan-Michael Vincent) returns home from the Air Force to marry Jerri (Kay Lenz). He borrows money to buy an used truck to be an independent trucker. He seeks work from his late father's partner Duane Haller (Slim Pickens) but he finds the business corrupt. Carrol Jo is unwilling to haul contrabands and gets beaten up by thugs. He is blackballed and decides to fight back.
It's a little ridiculous that he gets a load from Buck. It would be easy for them to call the corrupt cop and plant something on him. This gets geared up quickly. The danger starts high and has trouble going higher. They can't start with violence, corrupt cop, and a powerful cabal, then scheme a setup. The setup could have been great but they let him off too easily. Carrol Jo is not particularly smart. Once the killings start, it's time to go Rambo. There is a potential for this to be Rambo but the movie can't let him kill. It's a little infuriating. This should be about a lone driver being driven to take revenge on his tormentors. Instead, this insists on a man of the people movie. There is an obvious edit decision. When he's the lone Rambo at the end, Pops is riding shotgun in one of the action scenes. That's obviously from the earlier ride. His final rampage is not nearly enough and again he's not allowed to kill. This story is begging for revenge but it insists on justice.