France, 1625. Beneath the splendor of the French court, loyalty is a dangerous currency, religion is a weapon of state, and the men who protect the crown are often more honorable than the men who rule it.
When an impetuous young Gascon named d’Artagnan travels to Paris to join the King’s Musketeers, a humiliating encounter with a mysterious agent of Cardinal Richelieu sets him on a collision course with the most powerful men in France. Three challenges to duels bring him into the orbit of Athos, Porthos, and Aramis - three celebrated swordsmen whose camaraderie conceals private grief, ambition, and disillusionment.
As Queen Anne’s secret relationship with the Duke of Buckingham threatens to become a political catastrophe, the four men find themselves caught between the King’s honor, the Cardinal’s designs, and the machinations of Milady de Winter, a brilliant spy whose past binds her to one of their own.
What begins as a young man's quest for glory becomes a story of friendship tested by power, love corrupted by revenge, and the terrible price of choosing one's conscience over one's advancement.
One for all. All for one. But what happens when loyalty demands the unforgivable?