Filmed a few months before and playing in theatres when Wiley Post and Will Rogers were killed in a plane crash in Point Barrow, Alaska in August, 1935: Barry Eldon is the owner of an airline company that is competing with a rival company for a lucrative air-mail contract with the government. While the other company is bigger and more profitable than Barry`s line, the rival owner has hired a scientist that has perfected a ray-machine that will cause airplanes that its ray is directed at to lose their engine power and crash. Thed government and the public are losing faith in Eldon`s line before he, aided by Renee Dupont, can find out what is causing his airplanes to crash. (Wiley Post flys through on a cross-country stratosphere flight.)