He tells the tale, then. Starting with the backstory, which he readily admits he was not there for, how the old baron of Barthol's Peak was a greedy man, who became very rich but hoarded his wealth in the form of gold rather than spending it on swords and bows; How the dragon Kaarlis the Emberscale came out of the mountains and took the castle on Barthol's Peak for her lair. How the people who lived beneath the mountain fled, or were forced to pay tribute in beasts, and then in men, for they had no gold to give. Enter the young and foolish Baronet Antonio Ramirez, wandering adventurer whose manor-house in the heartlands did not get attacked by enough monsters for his taste. He had some adventuring companions - a slip called Softfoot who made a horrible pickpocket but a half-decent burglar, (And you just must have a burglar, for this sort of work) a wizard who got maimed and discharged from the army for reasons he kept as secret as his name (a real prodigy, of sorts, could cast all his spells silently and using only two fingers, which was a good thing too because that's all he had) and half a dozen men-at-arms. And an insane barber-surgeon because of course you couldn't find a cleric that could heal worth a damn in those days, and the clerics you could find you didn't want. And then, eventually, the grandson of the old incinerated baron of Barthol's Peak, who hired the lot of them to reclaim his birthright. He was also such an entitled prick. Have 2-3 anecdotes illustrating his prickishness.
There were the usual trials and tribulations on the way to the dragon's lair. Horrible snowstorms, mountainsides to scale, chasms to o'erleap. Orc raiders and goblin goblins. And then the fight with the wyrm itself! Now, he's heard it said that she wasn't a very big dragon, as dragons go. Only about half-again as long as this table. Not counting the tail. They snuck their way in hoping to come upon her in the great hall of the castle, hopefully at rest. They went in with enchanted blades and arrows, warded against flames, all of that, but Kaarlis was clever. She must've heard them coming or something because when they got to the great hall there she was, awake and ready and waiting. She did some magic of her own, stripped away their fire ward, and set to roasting them alive. The heir, useless commoner that he was, died instantly. Softfoot found his way into a giant-ass urn from somewhere across the crown of the world and waited out the fight there. But for the rest of them - heroics all around. It was a rough fight, most of the men-at-arms died valiantly, the wizard lost his last two fingers, Ramirez got chewed on a bit, but eventually and after many blow-by-blow accounts they triumphed. The wizard had a healing wand in his pack, and Softfoot managed to get it at least kind of working so they didn't need the barber-surgeon. And then they all retired to slightly less dangerous lives. The archduke - Ignasi's father - granted Ramirez the barony, the old family being both extinguished and clearly not up to the task of holding it. Softfoot's still there, helps run the castle and keep the books, hasn't stolen everything yet. The wizard got an escort to the border with Druma, where he was able to buy a regenerate spell with his share of the loot, then disappeared to do mysterious wizard things somewhere else. The barber-surgeon stayed on and got himself killed picking a fight with a giant mountain turtle a few years later.
And there! That's the story, 100% true and 30% embellished.