The narrative opens with a courageous young boy arriving in Paris. He aspires to enlist in the prestigious Imperial Guards, yet intense rivalry and a minimum age restriction prevent him from doing so. Consequently, the boy challenges the famous Three Musketeers to prove his superior swordsmanship. Just as the duel is about to commence, an ambitious faction intervenes. Recognizing their malicious intent, the boy, D'artagnan, and the Three Musketeers swiftly join forces to vanquish them. This event marks the start of their bond and their dedication to combating conspiracy.