Young d'Artagnan leaves his parents and travels from his native Gascony to the capital of France because he wants to prove himself an excellent fencing and to become a musketeer. He is told by his father he must not avoid any duel. On his way to Paris, d'Artagnan feels that his honour is besmirched because he overhears how his horse is derided by a sinister nobleman. He can't help but demand immediate satisfaction. Unfortunately, of all men he finds he has challenged the Count de Rochefort, a shifty character to whom Cardinal Richelieu frequently entrusts covert operations. Rochefort's henchman take care of d'Artagnan and steal from him. The enraged d'Artagnan is determined to take revenge and will eventually have the chance to do so, for the Queen has given a present to her secret admirer the Duke of Buckingham, and d'Artagnan must retrieve it from him, although he is now already back in England. If he fails her, Cardinal Richelieu is going to disclose Queen Anne's infidelity to King Louis XIII, in order to force a war against England upon him. The Cardinal and Count de Rochefort will do everything in their power if only they can put paid to d'Artagnan's mission. But with help from his three new friends d'Artagnan prevails.