It tells the story of a young man named d'Artagnan who travels to Paris to join the Musketeers of the Guard, a legendary group of soldiers who serve the king of France.
The novel is set in 1625, during the reign of Louis XIII, and is full of adventure, romance, and political intrigue. D'Artagnan quickly befriends three musketeers, Athos, Porthos, and Aramis, and together they become embroiled in a series of dangerous and daring escapades, including foiling a plot to assassinate the Duke of Buckingham and saving the queen of France from a blackmail scheme.
Along the way, d'Artagnan falls in love with the beautiful Constance Bonacieux and becomes embroiled in a dangerous love triangle with her and the evil Milady de Winter, a spy for the cardinal who seeks to destroy the musketeers.
"The Three Musketeers" is a classic of adventure literature, known for its colorful characters, exciting plot, and vivid descriptions of 17th-century France. Dumas's swashbuckling tale of bravery and loyalty has inspired countless adaptations and continues to capture the imaginations of readers today.