Two decades have passed since the famous swordsmen triumphed over Cardinal Richelieu and Milady in The Three Musketeers. Time has weakened their resolve, and dispersed their loyalties. But treasons and strategems still cry out for justice: civil war endangers the throne of France, while in England, Cromwell threatens to send Charles I to the scaffold. Dumas brings his immortal quartet out of retirement to cross swords with time, the malevolence of men, and the forces of history. But their greatest test is the titanic struggle with the son of Milady who wears the face of evil.