During a big race, Mark "High Gear" Sherrod skids into a fiery collision that kills his ace mechanic, Ed Evans. Racked with guilt, Mark promises to fulfill Ed's dying wish - to send his son Jimmy to an expensive military academy. Counting on future race winnings to pay the high tuition, Mark is devastated when he discovers that the trauma of the crash has robbed him of his "racing nerve." Forced to drive a cab to earn a living, the ex-racing star tries to keep his new line of work a secret from Jimmy, asthe bills keep piling up. The promise of fame and fortune constantly beckons High Gear to return to the dangerous world of the asphalt track, if he can only summon the courage.