Bullheaded Bo won't back down from his death-defying stunt car act. Meanwhile, the Duke family finds out that someone is trying to murder the carnival's stunt drivers.
Bo Duke continues his bull-headed attempt to go ahead in a stunt car act. Meanwhile, the Duke family finds out that someone is deliberately trying to murder the carnival's stunt drivers.
Frank and Joe Hardy are assigned to go to Puerto Rico to protect a senator's daughter from an international assassin known as the Scorpion.
While working at the race track in New Mexico, Banner's professional instincts are aroused by the plight of a race driver's brother, a man with developmental disabilities. His attempts to help him are met with resistance until the Hulk surfaces to save the brother after he is goaded into driving a defective car in the demolition derby.
Young Shelley Barrett tries to get to Barnaby, whom she believes is her father. She gets arrested on the way. Barnaby has to clear her, help her mother,and prove he is not the father.
