The world's finest ruby was stolen from the bride of Prince Kassim's great-grandfather several generations ago in India by a marauding rajah. It's now several decades later and the British have conquered India, and one day the ruby shows up for sale by a wealthy London jeweler, Sir John Garnett. Garnett has his own problems--there have been a rash of thefts of his wife's jewels, and he hires a private detective named James Brett to investigate.

Leslie MacLeod (Kathryn Adams) comes to England from the U.S. so that she can settle financial affairs with Lord Glenayr (Jack Holt), whom she has never met. She encounters Duke Lanzana (Fred Malatesta), who sees her as a way to pay off his mounting debts. He captures her and then heads to a nearby cape to steal a buried treasure that actually should belong to the MacLeods.

Lord Brancaster, a decent and upright British nobleman, loses his memory in an accident. While in this amnesiac condition, he becomes involved with the training of a horse, the Whip, for racing at Ascot.

An upper class melodrama.

Rafael Sabatini's story of the swashbuckling era and of Bardeleys, the handsome courtier who could win any woman he set his mind to...and was not above boasting about it to all who would listen.

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.

King Charles flees and hides in a huge oak tree when the troops loyal to Oliver Cromwell close in. The royal entourage is disguised, and the king's sweetheart masquerades as Charles. Only when she is brought before Cromwell is it discovered the switch has been made.

A villainous Major plots to destroy the Duke of Desborough to steal his prized racehorse, "Clipstone." He frames the Duchess, Muriel, in a false scandal, causing a divorce and financial ruin, but is ultimately thwarted when the horse wins the Derby.

Very jealous of the Duke of Desborough's prize race horse "Clipstone," Major Roland Mostyn schemes to destroy his rival and thus obtain possession of the animal. After framing the duke's wife Muriel in a false adultery suit which results in divorce, Mostyn ruins the young duke at cards, thus forcing him to auction his horse in order to pay his debts. Muriel, heartbroken by the separation, persuades her old friend Captain Streatfield to purchase the horse and enter him in the derby. Mostyn bets all his money on his horse and attempts to fix the race but his plot is discovered and Clipstone wins the contest. After Muriel's innocence is proven, Mostyn's villainy towards the duke is finally stopped and the couple is happily reunited.