3 musketeers

This is a story about a young man named D' Artagnan, who left his parents to become a musketeer. As it progresses, D' Artagnan meet three musketeers; Athos, the leader and has good humor, Porthos, a boastful guy who is eager for a duel, and Porthos, a quiet personality and would prefer to read in his studies. Their first job was to find Mr. Bonacieux's wife, which had gone missing longer than usual. After some sword slashing and clue finding, D' Artagnan finds out it is a few men who took her. After the Rescue , he begins to wonder why those men were there. I wonder who they work for?