D'Artagnan travels to Paris hoping to become a musketeer, one of the French king's elite bodyguards, only to discover that the corps has been disbanded by conniving Cardinal Richelieu, who secretly hopes to usurp the throne. Fortunately, Athos, Porthos and Aramis have refused to lay down their weapons and continue to protect their king. D'Artagnan joins with the rogues to expose Richelieu's plot against the crown.
In 17th-century France, the Queen brings the Three Musketeers — Athos, Porthos, Aramis, and an aging d'Artagnan — back from retirement for one last job: saving her son Louis and the whole kingdom.
When a couple of burglars make off with their family's presents and decorations, the Three Dogateers set off on a journey to sniff out the bad guys and save Christmas!