At the outset, a courageous young lad arrives in Paris. He dreams of enlisting with the famed Imperial Guard, yet stiff rivalry and a strict age threshold bar his entry. Determined, he dares the renowned Three Musketeers to prove his swordsmanship prowess. Just as combat ignites, a covetous faction intervenes. Recognizing their malevolent plot, the young man D'Artagnan and the Musketeers swiftly unite, vanquishing the intruders. Their alliance marks the start of a shared vow to confront treachery together in the city alleys, they pledge to guard honor and uphold justice against conspirators.