D'Artagnan, a young boy who dreams of becoming a musketeer, heads to Paris with his father's letter of introduction to meet Trebeel, the musketeer captain. However, on the way, a scarred man steals the letter from D'Artagnan, and he ends up meeting Trebeel without it... And then, by chance, D'Artagnan ends up in a duel with the three musketeers, Athos, Porthos, and Aramis, who are held in awe by all...!?