Tom Swift enters an upcoming race with his specially-designed prototype electric race car. But as he makes the final preparations and adjustments, days before the race, he discovers a plot that would bankrupt not only his family, but also everyone else that relies on the local bank (which is the target of a nefarious bank-run scheme). Tom must solve the mystery and stop the criminals behind the plot before he'll test himself on a 500 mile race against some of the best cars and skilled drivers in the United States.