In 1625 France, a young man named D'Artagnan, played by Chris O'Donnell, embarks on a daring adventure to Paris, fueled by the dream to become a member of the Musketeers—an esteemed group pledged to protect the King of France. However, before he can even settle in, D'Artagnan finds himself pursued by a vengeful group led by the brothers of a lady he briefly crossed paths with. The brothers vehemently accuse him of shaming their sister, as she had shared a farewell kiss with him, which he humorously recalls, saying, >"she wanted to give me something to remember her by!"
Upon arriving at the headquarters of the Musketeers, D'Artagnan discovers that they have been disbanded under the orders of Cardinal Richelieu, portrayed by Tim Curry. This disbandment, supposedly to prepare for an impending war with England, is overseen by the cunning Captain Rochefort, played by Michael Wincott. However, three intrepid Musketeers refuse to relinquish their allegiance: Athos (portrayed by Kiefer Sutherland), Porthos (played by Oliver Platt), and Aramis (played by Charlie Sheen).
As fate would have it, D'Artagnan soon engages in a series of fateful encounters with the trio, challenging each of them to duels on the very first day. However, their duel plans are abruptly interrupted when they are ambushed by the Cardinal's guards, forcing D'Artagnan to join forces with Athos, Porthos, and Aramis. Although the Musketeers appreciate his spirit, they must leave him behind when they are outnumbered and D'Artagnan is captured by Rochefort.
Maintaining a strong sense of loyalty and courage, D'Artagnan resolutely declines to divulge any information about the Musketeers during his interrogation by the Cardinal. His moment of insight comes during a daring escape when he overhears a critical conversation between Cardinal Richelieu and Countess Milady de Winter, interpreted strikingly by Rebecca De Mornay. The Cardinal instructs her to deliver a treaty to the Duke of Buckingham in England, a mission steeped in treachery.
However, D'Artagnan’s luck runs out when Rochefort catches him in the act. His defiance leads to a death sentence sanctioned by Richelieu, but the resilient Musketeers—Porthos and Aramis—disguised as executioners manage to rescue him from his fate, whisking him away in the Cardinal's own coach, piloted by Athos. After sharing the secretly overheard plans of Richelieu, they resolve to stop the impending betrayal aimed at the king.
Cardinal Richelieu continues to manipulate the young and naive King Louis XIII, as played by Hugh O'Conor, painting the three Musketeers as traitors, even as he lurks closer to the Queen Sophie of Austria, portrayed by Gabrielle Anwar.
Later, while resting at an inn, D'Artagnan becomes entwined in the heart-wrenching story of betrayal told by Athos— a tale that echoes his own present conflict when forced to confront Milady de Winter after an exhausting night. In a twist of fate, D'Artagnan learns of her true murderous nature but manages to convince her to spare his life when their paths intersect yet again as she attempts to escape with her nefarious plans.
A final showdown crescendos as they intercept Milady on her journey to England, only to discover shocking connections that bind them all—a revelation of romance gone awry between Athos and Milady that deepens the emotional stakes. As the battle culminates, a heart-wrenching scene unfolds where Athos attempts to save Milady from her death but ultimately fails, only to learn that she holds key information about Richelieu's schemes.
In a dramatic revelation during her execution, she whispers to Athos the Cardinal's nefarious plan to assassinate King Louis. This prompts D'Artagnan, Athos, Porthos, and Aramis to strategize in secrecy and regroup for the king's birthday—you can feel the tension and excitement gradually building.
As chaos erupts at the royal affair, the daring Musketeers prove their worth, facing off against both the Cardinal’s hired goons and their malevolent leader. In a gripping battle that tests their martial prowess, D'Artagnan discovers the shocking truth behind his father’s death, leading to a final confrontation with Rochefort, where vengeance fuels his duel.
After a series of intense confrontations and legendary swordplay, the Musketeers witness the fall of their enemies and the rise of their honor. The film reaches a resounding conclusion as King Louis XIII reinstates the Musketeers, honoring D'Artagnan as their newest member amidst celebrations of camaraderie and fierce loyalty.
With a final duel lurking on the horizon, D'Artagnan encounters the vengeful Gérard and his brothers, only to be reminded by Porthos that the Musketeers now stand united—every man for himself becomes "All for one, and one for all!" As they charge forward, the camaraderie forged throughout their perilous journey leads them into yet another adventure, as the film concludes amidst exhilarating swordplay and the sounds of galloping horses.
