A sadistic small-town sheriff has a habit of deliberately forcing speeders to their deaths on the mountain roads leading into town. The brother of one of the victims rolls into town in his hot rod to investigate his brother's death.

In 1958, two teenagers take their pride and joy, a hopped-up Chevy, and start a cross-country journey to enter it in the National Championship drag races in California. Along the way they hook up with a pretty but dingy waitress who quits her job and hops in their car--and turns out to be more trouble than they thought--drag-race a gang of town punks who lose to to them and then accuse them of cheating, and come up against a local cop who is obsessed with putting these two "juvenile delinquents" in jail.