Overview
The Three Musketeers is a 1948 film directed by George Sidney, written by Robert Ardrey, and starring Gene Kelly and Lana Turner. It is a Technicolor adventure film adaptation of the classic 1844 novel The Three Musketeers by Alexandre Dumas.
Plot
D'Artagnan, an inexperienced Gascon youth, travels to Paris to join the elite King's Musketeers. On his way, he encounters a mysterious lady at a roadside inn. When he picks a fight with one of her escorts, she becomes suspicious and has him knocked unconscious. His letter of introduction from his father to de Treville, the commander of the Musketeers, is burned. When he awakens, he continues on to the city.
In Paris, he nevertheless presents himself to de Treville, who recognizes d'Artagnan's description of one of his assailants and makes him a cadet. The young Gascon spots the very man and in his haste to confront him, annoys three of the most skillful Musketeers: Athos, Porthos and Aramis. Each challenges him to a duel. Upon learning they are all at the appointed place to duel the same man, the swordsmen are amused. Before they can begin, however, they are interrupted by Richelieu's guards, who try to arrest the Musketeers. D'Artagnan joins them in dispatching their foes. As a result, he is welcomed into their ranks.
Later, d'Artagnan rescues (and falls in love with) Constance Bonacieux, a confidante of Queen Anne. The queen was given a matched set of twelve diamond studs by her husband, King Louis XIII. Foolishly, she gives them to her lover, the Duke of Buckingham, who is also the Prime Minister of Great Britain. Knowing of the queen's indiscretion, Richelieu sees a way to persuade the King to go to war with Britain. Richelieu arranges a ball and suggests to Louis that he have the Queen wear the diamonds.
From Wikipedia (CC BY-SA 4.0).