Aircraft of all sizes take part in a race for The King's Cup.
Full titles read: "38 Machines of all sizes and speed compete in thrilling race for The King's Cup."
Location of events unknown.
Various shots show biplanes and all kinds of other aircraft and aeroplanes taking off from an airfield in this race; small groups of people watch. A man turns the huge blades of a helicopter to start it off; L/S of a helicopter taking off.
Intertitle reads: "Miss W. E. Spooner, the only woman competitor."
M/S of Miss Spooner wearing a flying helmet and sitting in the cockpit of her plane, before taking off in the King's Cup Air Race.