The story opens with a courageous young boy arriving in Paris, driven by a dream to join the Imperial Guards. However, fierce competition and an age restriction bar him from enlistment. To prove his swordsmanship, he challenges the famed Three Musketeers. Just as the duel begins, a power‑hungry faction interrupts. Realizing their malicious intent, the boy, D’Artagnan, along with the Three Musketeers quickly unite to defeat them. This marks the beginning of their friendship and their shared commitment to confront conspiracies.