| A young Air Force veteran, Carrol Jo Hummer (Jan-Michael Vincent, TV's "Airwolf"), starts a business as the owner-operator of a thirteen-speed, seven-and-one-half-ton diesel truck, named "The Blue Mule". With his bride, he sets off to Arizona, where his old friend gets him a job. After Carrol Jo realizes he will be carrying illegal cargo and refuses the assignment and is beaten by a band of gangsters. When Carrol Jo's commitment to staying honest results in even further violent retribution from the trucking syndicate, he has no choice but to team up with other independent truckers to break Cutler's stranglehold. |
