"Wait, so you're saying that they're called Death Eaters?"

Harry Potter sighed. What had he gotten himself into? Earlier, he had run into a flying warship, while taking practice runs on his Firebolt.

It had appeared out of nowhere, and Harry had nearly crashed into the figurehead, which had then turned and clacked at him reproachfully. Harry nearly freaked out then, because it was a dragon and only a head and it was alive! It had grabbed the back of his new t-shirt and tossed him onboard, searing the back of his shirt in the process. Harry's Firebolt had fallen out of sight, but he could always summon it later, so that wasn't a problem.

The problem was the kid running on board, running up, waving a glowing bronze sword threateningly. He was shouting in what was obviously a dead language, maybe Greek. Behind him were three other kids, a blonde dude with a gold sword that sometimes looked like a javelin, an impish Latino boy that Harry would never trust to hold his wand, and a girl with choppy brown hair and kaleidoscope eyes. The girl was holding nothing, but Harry got the impression that she was equally dangerous.

Harry pulled out his wand, and held it out defensively. The lead boy snorted. He asked something in that language, but Harry just re-brandished his wand.

"Oh. English?" The boy said. Harry nodded. "Oh. Well, I'm Percy Jackson, and I would like to know what you're doing on our ship."

"Muffliato!" Harry shot the silencing spell at the door that the mystery people had just come out of, and then sat on the floor.

"Seriously?" Percy asked. "Hades, Piper, we're dealing with a lunatic." The boy had an American accent.

"I'm not a lunatic." Harry said.

"Explain the stick." The blonde boy said.

"Explain the ship." Harry challenged back.

Percy waved his hand at Harry, snapped his fingers, and said "Tell us what you know."

It had no effect on Harry, but it clearly was supposed to, so Harry decided to play along. "When you die your hair still grows for a couple of months, the king of hearts is the only king without a moustache, St. Stephen is the patron saint of bricklayers, Mary Stuart became Queen of Scotland when she was only six days old, Charlie Brown's father was a barber, a lion's roar can be heard from five miles away, in ancient Rome, it was considered a sign of leadership to be born with a crooked nose, the word "nerd" was first coined by Dr. Seuss in "If I Ran the Zoo." , I can go on, if you like. I know quite a lot…"

Percy only slapped his forehead.

Blondie nodded. "It's true! The Rome thing anyway…"

"Prove you're not a lunatic." Percy said.

"Like… how?" Harry asked. It was fun messing with the boy; he got wound up so quickly. "Well, you're most likely Muggles, you don't know who I am, but you're in a flying ship… Oh Merlin, are you Americans? Well, that explains a lot."

Percy looked offended at the Muggles comment.

"Excuse me!"

"You're excused. Alarte Ascendare!"

Percy shot into the air, giving a shout of surprise. His sword dropped on the floor, and vanished. He dangled upside down by his ankle, all of the blood rushing to his face.

"Get…me…down!" he managed to yell. Harry laughed at their attempts, until the blonde flew up to him and forcefully pulled him down. As soon as Percy was out of range of the spell, he fell with surprising gravity.

The Latino imp ran up to him and shook his hand furiously. "I've wanted to do that to Percy for ages! I'm Leo Valdez, that's Piper McLean, and Jason Grace, the flying wonder."

"Harry Potter. Oh, I've forgotten something… Accio Firebolt!" The broom in question came zooming up from behind the ship and almost smacked Leo on his arm on the way to Harry. Harry tucked his wand away, now that everyone was crowding him.

"So, I've got a question. Are you or are you not Muggles?"

"We're… demigods. Does that answer you?"

Harry practically kissed their shoes before he remembered his dignity. Hermione had been ranting for days on end about these magical people who didn't need wands to channel their magic, but specialized in one type of magic only. They called themselves half-bloods, or demigods, sons and daughters of gods. She had absolutely loved the idea of singular wandless magic, and had not stopped talking about it. She loved them. It had rubbed off on Harry.

Suddenly, a cold feeling settled around the ship. Wind started blowing, whipping Harry's glasses off his head, before his Seeker reflexes caught them.

"I thought you made them go away!" Percy shouted at Piper. Harry was impressed. Making Dementors go away was tricky, and permanently was practically impossible.

"Expecto Patronum!" Harry shouted, to save them the trouble. The usual majestic deer burst out of the tip, and ran around the bottom of the ship for a while, before coming back to Harry and vanishing. The temperature shot back up to its normal, and the winds slowed.

All of these demigod teens were gaping at Harry. They must never have encountered a wizard before. Just wait until they meet Hermione she would be fawning over them, and probably asking for autographs.

"Alright, tell us everything." Jason said.

Which is how they got to where they were now, with Percy and Leo rolling on the floor laughing, Piper and Jason just exchanging exasperated glances.

"Okay, okay," Leo said after regaining his breath. "What does Thanatos even taste like?"

This set them off laughing all over again. Harry sighed. Eventually Percy straightened, and dragged Leo up with him.

"Do I get to laugh at your centaurs being like drunkards now?" Harry asked.

"Dude, they are drunkards."

"Harry!" the voice was very faint, and only the wind carrying it to him made it audible at all. It was Ron's voice, and he was probably searching on his broom.

"Hi-"

"-Harry!"

Fred and George's twin faces popped over the side of the airship. They were a lot closer that Ron was. Everyone jumped.

"Come on, mum's-"

"Waiting for you. You-"

"Had better get back, or she-"

"Will be madder than that giant squid."

The twins dropped over the side, and Harry leapt on his Firebolt and zoomed away.

"Oh!" Piper exclaimed.

"What?" Jason asked.

"I forgot to make him forget."

Percy and Leo fell down once again.

"What's taking so long up here?" Frank asked. "Hazel's getting sick again, and we can't hear anything down there."

Percy looked at Leo and said, "Muffliato!" in dawning realization.

"Now, how are we going to find him?" Jason asked.

Percy just sighed. "Either the spell wears off, we meet him again, or it's permanent."