Although "ace" commercial airline pilot, Chick Faber (Dennis Morgan) is grounded by Flight Superintendent Bill Graves (Ralph Bellamy) when a flight physical reveals that his eyesight is failing. Aided by stewardess Mary Norvell (Virginia Bruce) and her friend, Nan Hudson (Jane Wyman), Graves persuades Chick to take a job as teacher in the school for stewardesses. While he remains at the airline, along with engineer, Artie Dixon (Wayne Morris), he continues work on the design of a secret research aircraft, he calls the "stratosphere ship" that will revolutionize commercial aviation by flying faster and higher than any current type.