At a dance given by Earl Dexter, his wife, for the gratification of a whim, wears a beautiful pearl necklace recently purchased by Viscount Acheson. Craig Dare, who is a gentleman thief, makes love to Earl Dexter's wife, and at the same time succeeds in stealing from her the pearl necklace and handing it out of the window of the house to Tony Oscaros, a chauffeur, who is none other than Dexter, who is leading a dual life.

Frank Draper, a patriotic young American, has invented the most wonderful explosive in the world which he intends giving to the United States. In defending a pure girl from the machinations of an enemy, he is involved in a serious crime which sends him, an innocent man, to prison. Angered at this interruption to their plans and desirous of obtaining the explosive for a foreign government, international spies connive successfully at Draper's escape. They then hold him a prisoner and the young patriot is given the choice of sacrificing his own life or that of his country. He chooses the preservation of the latter, and his sands of life have almost run out, when trapped and bound, he is rescued at the eleventh hour.

The story of the training of a racehorse, the Whip, of the amnesiac nobleman who loves the horse, and of the villains who attempt to keep it from racing.