Don Q, Son of Zorro is the 1925 sequel to the 1920 silent film The Mark of Zorro. It was loosely based upon the 1909 novel Don Q.s Love Story, written by the motherandson duo Kate and Hesketh HeskethPrichard. The story was reworked in 1925 after Hesketh HeskethPrichards death into a vehicle for the Johnston McCulley character Zorro. The film adaptation was made by screenwriters Jack Cunningham and Lotta Woods for United Artists studios. Douglas Fairbanks both produced the film and starred as its lead character.
Don Diego de la Vega Zorros son, Cesar Douglas Fairbanks, is in Spain finishing his education. While Cesar is showing off to friends his remarkable prowess with the whip, he accidentally clips off the feather shako on the hat of Don Sebastian Donald Crisp of the Palace Guard. Although Cesar apologizes immediately, Sebastian is unforgiving. Their duel is interrupted by a runaway bull. Trapped on the ground with his sword belt tangled in his boot, certain to be gored by the bull, Sebastian is saved at the last minute by Cesar. This further infuriates him. The action is observed by Queen Isabella Stella De Lanti and her guest, Austrian Archduke Paul Warner Oland she requests Cesars company immediately. Another friend of Cesar, Don Fabrique Borusta Jean Hersholt, offers to bring him to Her Majesty.Meanwhile, Cesar encounters Dolores Mary Astor, daughter of his fathers old friend, General de Muro Jack McDonald, as she poses for a sculptor. It is love at first sight. But Sebastian, who comes from a poor family, has set his sights on Dolores and her familys wealth, and is determined to win her. Later, the Archduke invites Cesar to paint the town, with Sebastian as their duenna. In a local tavern the Archduke offends the patrons, all seeming ruffians, by flirting with the dancer. Sebastian contrives his and the Dukes escape, but locks Cesar in the tavern to defend himself against the cutthroats. In the carriage that takes them away from what he is sure will be Cesars death, Sebastian declares he has a meeting with Dolores. The Archduke invites himself along. While Sebastian asks the General for his daughters hand, the Archduke sees Dolores serenaded by Cesar, who escaped easily and even acquired a guitar as a souvenir. Seeing the reactions of the young couple, the Archduke knows Cesar has won Doloress heart. ........
Source: Wikipedia