J.D. (Chuck Norris), a trucker from California, returns from the road to learn that an old friend was assaulted and paralyzed by Sergeant Strode (Don Gentry), a policeman in Texas City, California. He makes inquiries into Texas City and learns that its policemen Strode and Deputy Boles (Ron Cedillos) have a history of "trapping" truckers for a corrupt judge running various rackets in the so-called "City".