On the road to Meune, Dogtanian is insulted by a cavalier with a black moustache, who calls him a country bumpkin. Sandy is too slow to catch up to his black horse, but when Dogtanian stops at an inn in Meune he discovers the man is his fellow-guest. He demands a duel, which is interrupted by the arrival of Milady. The man with the black moustache, who is anxious to keep his identity a secret, instructs Milady to go to England and spy on the Duke of Buckingham, who is suspected of having an affair with the Queen of France. Dogtanian is struck by the beauty of Milady. He demands to continue the duel, but the cavalier's squire and the innkeeper beat him to within an inch of his life. His money is taken to pay the innkeeper and the mysterious man takes his letter of introduction to Monsieur Treville. Dogtanian is badly hurt, but recovers with the help of the healing ointment his mother gave to him. He recovers his sword, which is being used as a kebab skewer, but must leave Sandy behin

Dogtanian is walking to Paris, carrying his saddle. On the road he is splashed by a coach and chases angrily after it. The occupant, a pretty young lady, apologises and cleans him off, winning his heart and leaving him with her handkerchief. Once in Paris, Dogtanian goes to the Muskehounds' headquarters and is told he must fight and defeat all the other young hopefuls before he can see Monsieur Treville. But his sword is broken, so he finds work with a swordsmith to earn a new one. After a day of sharpening weapons he is given a poor-quality sword. The girl from the road questions the swordsmith about his assistant, but by this time Dogtanian is gone. She buys an expensive sword. Tired and hungry, Dogtanian wanders the streets. When he stops to rest under a tree he is set upon by ruffians and forced to move on. A guard spots him and tries to arrest him as a vagrant. He collapses in the street and is woken by water falling on him. When he protests he sees that the culprit is his n

Dogtanian is awoken from a dream of Juliette by her uncle, who tells him he was brought into their house unconscious and can stay as long as he wants. He and Dogtanian rush out to watch a fight, which turns out to be Athos, the strongest of the Musketeers, fighting four of the Cardinal's Guards with his bare hands. Dogtanian learns of the rivalry between the two groups. One of the defeated guards happens to bear a strong resemblance to the Musketeer Porthos. Dressed in an identical uniform, he robs civilians while claiming to be Porthos. Dogtanian surprises him in the act of taking money from two women, and chases him. In the forest they encounter the third of the Muskehound trio, Aramis. He discourages the false Porthos from stealing his horse but will not help Dogtanian chase the thief, preferring to pray for his soul The Captain of the Guards, Widimer, leads a band of men to arrest Porthos. Dogtanian is at their head, for he believes he saw Porthos in the act of robbing innocen

It is a fine morning, and Dogtanian goes to see Monsieur Treville. He arrives at the Musketeers' headquarters just as Widimer rides up to arrest Athos and Aramis for drawing their swords on the Cardinal's Guards. Treville appears and points out that if the guards drew their swords also then they are guilty too - of fighting a duel, which His Majesty's law forbids. Widimer is defeated but spots Dogtanian and orders his men to arrest him. After a comedy chase through the streets of Paris, Dogtanian escapes by leaping from a rooftop onto a carriage, which by chance is taking a Countess and her son to see Monsieur Treville in the hope that the boy, Terence, can join the Musketeers. Treville is cautioning Athos and Aramis about their duelling activities when the Countess arrives. After dealing with her, he hears a fight outside and, investigating, sees Dogtanian fighting two of Widimer's men. He demands to know the name of this courageous young man. Dogtanian wins, and Widimer is about t

Still chasing the Man with the Black Moustache, Dogtanian bumps into Athos, who is showing off his fancy new baldric to an admiring guard. In the scuffle with Dogtanian it is revealed that the back part of the baldric is missing. Athos has been made to look silly, and he challenges Dogtanian to a duel. Next Dogtanian meets Aramis entertaining a lady friend. He also gets angry with the youngster and challenges him to a fight. Meanwhile his quarry, who is actually Count Rochefort, a spy for Cardinal Richelieu, gets away. Widimer learns that the Musketeers are going to duel and plans to catch them red-handed breaking the law. Dogtanian arrives for the duel and finds that Porthos has picked Athos and Aramis as his seconds. Noticing that Porthos is troubled by his wound, he offers him the healing ointment, but Porthos refuses. They fight, and prove to be evenly matched. When they are exhausted Widimer's men step in to arrest them, but Dogtanian and the Three Muskehounds resist arrest and

Dogtanian sets out for the Musketeers' headquarters, where he is given a hero's welcome. However, Treville tells him he cannot become a Musketeer immediately. As a reward he is taken to the Palace gardens, where he slips away looking for Juliette and gets in a tangle with the royal underwear. Treville, meanwhile, has an audience with the King, but Cardinal Richelieu is there too. He wants his Guards to take over from the Musketeers as the guardians of the Palace, and suggests a test: if the Musketeers cannot go one day without drawing their swords, they will lose their traditional job. As Monsieur Treville announces this to his men, Dogtanian spots his horse Sandy in the street and runs to him. The stable-hand from Meune, Planchet, has brought him, and Dogtanian goes in search of his friends so he can borrow money to pay him. He finds Athos, Porthos and Aramis being humiliated at the hands of three of the Cardinal's Guards, after rescuing a comrade from their clutches, and cannot un

While Dogtanian dreams of his beloved Juliette, she is at the Palace being given instructions by the Queen to take a message to the Duke of Buckingham. If he and the Queen are found conspiring it will be disastrous for Anne and France itself. Juliette uses a walk with Dogtanian as cover for her mission, but Widimer follows them. While Dogtanian is chasing him off Juliette slips away, leaving a note in which she apologises and asks Dogtanian to meet her at the Pomme de Pup that night. The Three Muskehounds accompany Dogtanian to the restaurant as protection. Widimer and his guards come in and start a fight, but are beaten and humiliated once more. But eight o'clock comes and Juliette does not appear; she has been kidnapped by Count Rochefort and a party of guards.

Dogtanian comes in depressed from his date, for which Juliette never showed up. Her uncle is also worried, and more so when Rochefort rides up to tell him that he is holding Juliette prisoner. Dogtanian, Sandy and Planchet set out to look for her but fall asleep under a tree, exhausted. Juliette, prisoner in a cottage in the woods, tries to escape from her guard but is caught and tied up. She uses her mirror to flash a signal from the window. Sandy sees it and finds her, and takes the mirror back to Dogtanian. But Rochefort tricks the friends into pursuing him while Juliette is still in the cottage. Meanwhile Widimer, utterly disgraced in the eyes of the Cardinal, is wandering the streets drunk when he comes across Aramis and a lady friend. Mistaking Aramis for Buckingham, he challenges him but realises the mistake and runs off. Aramis sees Dogtanian pass by and asks what's wrong, but Dogtanian can only shake his head and howl for Juliette.