"The Three Musketeers" is a classic historical adventure set in 17th-century France, adapted for intermediate English language learners. The story follows d'Artagnan, a spirited young man who travels to Paris with the ambition of joining the elite Musketeers of the Guard. He soon befriends three of the most formidable musketeers—Athos, Porthos, and Aramis—and becomes embroiled in a web of p…