Prepare for more pulse-pounding thrills, more breathtaking action and more high-stakes heroism. The gallivanting royal bodyguards for King Louis XIII, Athos, Aramis, Porthos and d'Artagnan, are back for love, honor and adventure. Together, the inseparable Musketeers employ their bravery and skill to track down a missing Musketeer; become embroiled in a full-scale riot orchestrated by a notorious criminal mastermind; and embark on a dangerous mission...

Under the sinister influence of Minister of Finance Fouquet, Louis rules with wasteful opulence. His brother Philippe, the rightful heir, lives in obscurity with no knowledge of his birthright. But the captain of the Musketeers, D'Artagnan, has plans to restore the declining fortunes of the throne by secretly substituting Philippe for the King.