D’Artagnan has a big ambition. He wants to become a musketeer – a brave member of the King’s Guards. So he sets out on his horse to prove himself... and uncovers a terrible plot against the Queen.

Will young D’Artagnan be able to convince the three famous musketeers Porthos, Athos and Aramis that he is good enough to join them? And if they don’t take him seriously, what will become of the Queen?