In seventeenth-century France, young D'Artagnan befriends three musketeers, Athos, Porthos, and Aramis, and joins them in trying to outwit the enemies of the king and queen. It's "one for all and all for one!" as D'Artagnan and his three pals follow a course of swashbuckling intrigue and adventure in 17th-centry France.