Epic drama set during the First World War, produced at great cost by Howard Hughes and featuring the most celebrated aerial combat sequences of the period. Monte Rutledge (Ben Lyon), his brother Roy (James Hall) and their German friend Karl (John Darrow) are friends at Oxford who find themselves fighting on opposite sides at the outbreak of the Great War. Monte and Roy join the fledgling Royal Flying Corps, while Karl does his best to limit the damage to London from the Zeppelin bombing raids he commands. Monte and Roy find that their relationship is strained by their rivalry over the love of Helen (Jean Harlow), and by Roy's cowardice when it comes to the dangerous mission they are assigned. But when the two brothers find themselves shot down over German lines, Roy has to do the unthinkable to stop a shell-shocked Monte from revealing vital information to their German captors.