Wealthy racing driver Tom Hayden loses his inheritance and his fiancé due to a wacky mishap on his wedding day.

In 1915 France, Major Brand commands the 39th Squadron of the Royal Flying Corps. The young airmen go up in bullet-riddled "crates" and the casualty rate is appalling, but Brand can't make the "brass hats" at headquarters see reason. Insubordinate air ace Captain Courtney is another thorn in Brand's side...but finds the smile wiped from his face when he rises to command the squadron himself. Everyone keeps a stiff upper lip.

Famous auto racing champion Joe Greer returns to his hometown to compete in a local race, discovering that his younger brother has aspirations to become a racing champion.

When World War I comes to an end, three pilots find themselves on hard times. They wind up in Hollywood, where they work as stunt fliers for a sadistic director.

When the Great War breaks out, brothers Roy and Monte Rutledge, each attending Oxford University, enlist with the Royal Flying Corps.