Watch Barbie and the Three Musketeers for Free: How to Stream the Movie Online at 123Movies. . Corinne (Barbie) is a young country girl who heads to Paris to pursue her big dream – to become a female musketeer! Never could she imagine she would meet three other girls who secretly share the same dream! Using their special talents, the girls work together as a team to foil a plot and save the prince. It's all for one and one for all!