During an operation, the Three Musketeers were betrayed and plotted by Milady (Milla Jovovich) and the Duke of Buckingham (Orlando Bloom), and they retired to the countryside after their failure. Three years later, D'Artagnan (Logan Lerman), who had mastered swordsmanship, came to Paris to join the Musketeer Captain Treville (Matthew Macfadyen). He met the Three Musketeers and unexpectedly became friends with them. He also met the Queen's maid and fell in love with her at first sight. Soon after, everyone accidentally learned that the powerful Red Master Richelieu (Christoph Waltz) wanted to provoke relations between Britain and France for his own plan to destroy the country, and intended to create a royal scandal to make King Louis XIII misunderstand Queen Anna. In order to fight against the evil plot of the Red Master, protect the innocence of Queen Anne, and maintain the peaceful relationship between Britain and France, the people with a sense of justice fought a battle of wits and courage with the enemy. D'Artagnan stood out in this battle with his excellent swordsmanship and resourceful mind... The film is adapted from "The Three Musketeers", a masterpiece by French writer Alexandre Dumas.