 When Dr. Doug Lee fails to save the life of navy pilot Swede Larson, who blacked out and crashed after entering a steep dive, the flyer s friends take an immediate dislike to him and disparage his efforts to learn more about the problem by becoming a flyer himself. Lee s new superior officer, Dr. Lance Rogers, also exhibits resentment toward the presumptuous newcomer. They ultimately become friends and form a mutual bond of personal and professional respect when their research develops a high altitude flying suit which they hope will prevent the kind of blackouts that killed Swede. Unfortunately the process of experimental testing of the new device proves to be a dangerous undertaking.