In 1191, Richard the Lionheart (Ian Hunter), the King of England, is taken captive by Leopold V, Duke of Austria while returning from the Third Crusade. Richard’s treacherous brother Prince John (Claude Rains) usurps the throne and proceeds to oppress the Saxons, raising taxes supposedly to pay Richard's ransom, but in reality to secure his own position.
Sailing to Port Royal, Governor Weatherby Swann, his daughter Elizabeth, and Lieutenant James Norrington encounter a burning shipwreck and recover a young boy Will Turner. Elizabeth hides a golden medallion owned by Will, and sees a ghost ship vanishing into the fog. Eight years on, Norrington is promoted to the rank of Commodore and proposes to Elizabeth, but her tight corset causes her to faint and fall into the sea. She is rescued by Captain Jack Sparrow, who Norrington identifies as a pirate who intends on commandeering a ship. Jack attempts to escape but runs into Will, now a blacksmith and a talented swordsman. They engage in a sword fight but Jack is captured by Norrington’s men and imprisoned.
In 17th century England, an Irish doctor named Peter Blood (Errol Flynn) is summoned to aid Lord Gildoy, a wounded patron who had participated in the Monmouth Rebellion. Arrested while performing his duties as a physician, he is convicted of treason against the King and sentenced to death by the infamous Judge Jeffreys. By the whim of King James II, who sees an opportunity for profit, Blood and the surviving rebels are transported to the West Indies to be sold into slavery.
English gentleman Rudolf Rassendyll (Ronald Colman) takes a fishing vacation in a small middle European country (unnamed in the film; Ruritania in the novel). While there, he is puzzled by the odd reactions of the natives to him. Rassendyll discovers why when he meets Colonel Zapt (C. Aubrey Smith) and Captain Fritz von Tarlenheim (David Niven). Zapt introduces him to the soon-to-be-crowned king, Rudolf V (Colman again), who turns out to be not only his distant relative, but also in facial features close enough to be his double. Rudolf is astounded and takes a great liking to the Englishman.
The film begins with King Philip II of Spain (Montagu Love) declaring his intention to destroy England and after this "puny rockbound island as barren and treacherous as her Queen" is out of the way, he believes that world conquest will follow: he says his great wall map, one day, "will have ceased to be a map of the world; it will be Spain." He sends one of his courtiers, Don Alvarez (Claude Rains), as his ambassador to allay the suspicions of Queen Elizabeth I (Flora Robson) about the great armada he is building to invade England. In England, some of the Queen's ministers plead with her to build a fleet, which she hesitates to do in order to spare the purses of her subjects.
In France just prior to the French Revolution, Queen Marie Antoinette (Nina Foch) asks her cousin Noel, the Marquis de Maynes (Mel Ferrer), to uncover the identity of "Marcus Brutus", a dangerous pamphleteer rousing hatred of the aristocracy.
Don Diego Vega (Tyrone Power) is urgently called home by his father. To all outward appearances, he is the foppish son of wealthy ranchero and former Alcade Don Alejandro Vega (Montagu Love), having returned to California after his military education in Spain. Don Diego is horrified at the way the common people are mistreated by the corrupt Alcalde, Luis Quintero (J. Edward Bromberg), who had forced his father from the position. Don Diego then adopts the guise of El Zorro ("The Fox"), a masked outlaw, who becomes the defender of the common people and a champion for justice. Meanwhile, he romances the Alcalde's beautiful and innocent niece, Lolita (Linda Darnell), whom he grows to love. As part of his plan, Don Diego simultaneously flirts with the Alcalde's wife Inez (Gale Sondergaard), filling her head with tales of Madrid fashion and culture and raising her desire to move there with her corrupt husband. In both his guises, Don Diego must contend with the governor's ablest henchman, the malevolent Captain Esteban Pasquale (Basil Rathbone). He eventually dispatches the Captain in a fast-moving rapier duel-to-the-death, forcing a regime change, Don Diego's plan all along.
The wedding of Will Turner and Elizabeth Swann is crashed by Lord Cutler Beckett of the East India Trading Company, who has arrest warrants for the couple along with Commodore James Norrington, for allowing Captain Jack Sparrow to escape custody. Norrington resigned after his crew died in a typhoon. Elizabeth is imprisoned, but Beckett promises to free her if Will tracks down Jack and brings him his magic compass which points to whatever the holder wants most. Shortly after, Governor Swann tries to escape Port Royal with Elizabeth but is captured. Elizabeth negotiates with Beckett to let her escape to find the compass herself.
In seventeenth century Paris, poet and supreme swordsman Cyrano de Bergerac (José Ferrer) stops a play from being shown because he cannot stand the bombastic style of the principal actor, Montfleury (Arthur Blake). An annoyed aristocratic fop, the Vicomte de Valvert (Albert Cavens), provokes him into a duel by tritely insulting Cyrano's enormous nose. Cyrano first mocks his lack of wit, improvising numerous inventive ways in which Valvert could have phrased it (much to the amusement of the audience). He then composes a ballade for the occasion on the spot and recites it during the swordfight. With the last line, he stabs his opponent.
Manimaran (M. G. Ramachandran), is a doctor living in the country of Neidhal Naadu with his sidekick Azhaga (Nagesh). He helps cure the illness of one of the rebels against the dictator (Manohar) of Neidhal Naadu. The ruler's guards arrest the rebels, along with Manimaran for helping them. Manimaran and the rebels are sold as slaves by the ruler to the nearby island called Kanni Theevu (Tamil for Virgin Islands), ruled by Sengappan. Manimaran leads the slaves, and fights for their rights.
Marziana (P. Bhanumathi) is a dancer in Baghdad. The tyrant Sher Khan, commander of the notorious king Amir Kasim Khan (M. G. Chakrapani), tries to take her by force to his palace. She is rescued by Ali Baba (M. G. Ramachandran), who fights with Sher Khan and vanquishes him. Marziana and her sidekick Dowlat (K. Sarangkapani) find refuge in Ali Baba’s house. Alibaba is an impoverished woodcutter and lives with his sister Ayisha (P. Susheela) and servant Bulbul (M. N. Rajam). Marziana learns that they are the siblings of Kasim, who had driven them out at the instigation of his cruel wife Salima (Vidyavati). Marziana and Ali Baba later fall in love.
In Tudor England, two boys are born on the same day in the most different circumstances imaginable. Tom (Billy Mauch) is the son of vicious criminal John Canty (Barton MacLane), while Edward VI (Bobby Mauch) is a prince and the heir of King Henry VIII of England (Montagu Love). One grows up in poverty, hungering for something better for himself and his family, the other in isolated luxury, with a strong curiosity about the outside world.
The film is set in France during the Seven Years' War. As the film begins, Fanfan (Gérard Philipe) is a charming, attractive young man who is trying to escape a shotgun marriage. At this vulnerable point in his life, he is approached by the daughter of a recruiting officer, Adeline (played by Gina Lollobrigida), who tells him that if he joins the army, he will find fame, fortune, and will marry the king's daughter. Accordingly he joins the army, only to discover that she made the whole thing up in order for her father to get a recruiting bonus. Nevertheless, encouraged by a series of improbable circumstances, he accepts her prediction as his destiny. A series of events ensues which shows off to great advantage his athleticism and leadership ability. As the film progresses, we become aware of a developing attraction between himself and Adeline which however conflicts with his perceived “destiny” of marrying a king's daughter.
The mysterious Don Del Oro ("Lord of Gold"), an idol of the Yaqui Indians, has emerged and attacks the gold trade of the Republic of Mexico, planning to take over the land and become Emperor. A man named Francisco is put in charge of a fighting legion to combat the Yaqui tribe and protect the gold, but he is attacked by men working for Don Del Oro. Zorro comes to his rescue, but it is too late for him. Francisco's partner recognizes Zorro as the hidalgo Don Diego Vega. Francisco asks Diego, as Zorro, to take over the fighting legion and defeat Don Del Oro.