Synopsis: An oil tycoon and aircraft constructor is determined to manufacture a supersonic jet that will travel faster than the speed of sound, and his unswerving desire to reach this goal brings suffering, even death, to his own family. Shocked at her fathers disregard for human life, his daughter Susan (Ann Todd, The Paradine Case) walks out on him. Unperturbed, Ridgefield approaches another pilot with the challenge of piloting his test craft.