In this revisioning of the classic story by Alexandre Dumas, the young D'Artagnan of Gascon sets out for Paris and ends up becoming a King's Musketeer. Veteran Musketeers Athos, Porthos, and Aramis take him under their wing and together they battle against the machinations of those who would undermine the rule of King Louis XIII. Their primary enemy is Cardinal Richelieu, the most powerful man in France, who often controls the young king despite the efforts of Louis' wife Queen Anne of Spain. Richelieu will do anything to see France meet its destiny... even if it means undermining the King. His primary agent is Milady, a mysterious woman with ties to Athos' past. But the Musketeers have allies of their own, including the beautiful young Constance, and the support of Captain Treville.