Stories of the heroic Musketeers and Joan of Arc have traveled through all of 17th Century France. Princess Madeline, daughter of the king, has dreamed of fighting alongside the most noble soldiers in France. Tragedy strikes when a Huguenot assassin kills the king and queen of France in the Louvre palace. One week later, Madeline is betrothed to her childhood bully, Lord Nicholas Beauchard. She escapes her fate by disguising herself and enlisting in the Musketeers. Madeline is reunited with Pierre St. Just, captain of the King’s Musketeers and the man who always held her heart. When her brother, King Louis XIII, sends the Musketeers out on a rescue mission, Pierre hides Madeline in his troops. They travel through the countryside as she searches for the assassin who killed her parents. When a secret plot threatens the royal family, Madeline is left with a choice. Does she remain a princess, or become a Musketeer?