During the First World War an American officer and a British aristocrat fall in love but are separated. After the war he returns to find her engaged to another man. The issue is settled by a bet on The Derby horse race.[4]
Captain Terrance Connaughton loses his stable of horses in a card game with Algernon Cravens. The next day he is wounded and taken to a military hospital where he meets and falls in love with Lady Gwendolyn. After an attack on the hospital Captain Terrence and Lady Gwen are separated for a while until the end of the war, where Terrance returns home without anything. To Captain Terrences surprise, Cravens, has made Lady Gwen promise to marry him and has entered the horses he won from Terrance in the National Derby. Terrance goes to London to attend the Derby and sees Lady Gwen again. The importance of the derby is ultimately based on who Lady Gwen can be with.
