Joe Kovak is a test pilot for military-aircraft designer Sam Bentley, who thinks of Joe as a son. A competing plane company is seeking the same Army contract as Bentley, and offers a $500 bonus to their publicity woman Marge Stevens if she can entice Joe into quitting Bentley to join their company....
Set just before the outbreak of WWII, this is the story of a test pilot who works for the (unnamed) enemy. Made in 1939, by the time it was released in 1940, war had been declared.