A test pilot is engaged in a series of experiments to discover the cause of altitude sickness and find a way to prevent aircraft crews from blacking out while flying at high velocity. He finds an ally in a Naval surgeon, but personal differences threaten to undermine their work. Drama, starring Errol Flynn and Ralph Bellamy.

A military surgeon teams with a ranking navy flyer to develop a high-altitude suit which will protect pilots from blacking out when they go into a steep dive.