 Wally (Wallace Beery) and Ray (Raymond Hatton) are cousins whose grandfather, Lord Abercrombie McTavish (Russell Simpson), is an aviation enthusiast who wanted to sign up as a pilot in the war.Wally and Ray are intent upon getting the fortune of their Scottish grandfather, and decide to show him that they are just as interested in aviation.Wally and Ray enlist in the United States Army Air Service, and are caught up in the aerial battles over the World War I front lines.