Now in Richelieu’s service, D’Artagnan sets off for Rome on a secret mission. Along the way, he rescues Roger de Bussy-Rabutin and the young ladies traveling with him from a predicament. Julie and Marie are not immune to the hero’s charm, which sparks a quarrel between the two men. D’Artagnan, having fallen in love with the beautiful Marie de Rabutin-Chantal—who, unfortunately, does not wish to marry a legend—sets off once more into battle with his faithful companion Planchet and reunites, one by one, with all his Musketeer friends.