The ever-dashing Errol Flynn stars alongside Fred MacMurray in this action packed drama set at the U.S. Naval Air Station in San Diego during the uncertain year of 1941. With war already raging in Europe, U.S. Forces began to prepare for their seemingly inevitable involvement in the conflict. As part of the preparation Naval flight surgeon Lt. Doug Lee (Errol Flynn) is determined to eradicate pilot blackout and altitude sickness, thus handing U.S. pilots an immeasurable advantage. With the initially reluctant help of Lt. Com Joe Blake (Fred MacMurray) the two men risk their own lives in order to find a cure.