CHAPTER 1:

Percy POV

DISLCAIMER: I DO NOT OWN THE PERCY JACKSON SERIES (or characters) OR THE HARRY POTTER SERIES (or characters)

"Can The Seven and Nico, Grover and Thalia please report to the Big House?" A voice called and I mentally groaned. Couldn't Chiron cut us some slack? We literally ended the war 2 days ago and were just starting to rebuild everything that had been destroyed and we, The Seven especially, were exhausted. Most of us spent our time sleeping, Annabeth and I, however had a hard time sleeping, though, because we were haunted by nightmares of our horrible experience in Tartarus.

Right now, the two of us were at the beach, just enjoying each other's company and the fact that nothing bad was happening to us right now. I sighed and stood up, brushing sand off of my shorts. I reached down and pulled Annabeth up as well.

We made eye contact and I knew that at once, we both had the same thoughts. Why can't we be left alone? I know that people were constantly watching over us after that 'incident' in the stables, but lately, that hasn't even been a big deal, seeing as Annabeth literally moved into my cabin, because of our nightmares.

We reluctantly made our way to the big house where we saw everybody else, except for Nico, was already there. We sat down in the Big House and Chiron looked at all of us. His eyes held many emotions, anger, sadness, pride and sorrow. I gulped, what was wrong NOW?

Suddenly, Nico appeared, having shadow travelled. He saw us all and smiled, but frowned when no one reciprocated.

Chiron cleared his throat as Nico sat down. "I am SO sorry for this, but I have been ordered by Lady Hecate to give you a quest…" Hazel's eyes brightened at the sound of Lady Hecate's name, but immediately darkened at the sound of a quest, as did everybody else's.

Annabeth jumped up, tears pooling in her eyes. "WHAT? Are you kidding me? We barely won and survived through another war and we are all exhausted and-and-and Chiron, are you serious?" She burst out and I pulled her onto my lap wordlessly.

"I am aware of all of this Annabeth, dear, but you know that I can't just turn down a command from a goddess. I hate to do this to you, but she said that you ten are the best of the best and that only you could do the job." Chiron replied sadly.

Annabeth wiped her eyes and sighed. She nodded and then turned so that her face was buried in my shoulder. I had a feeling that she just wanted to burst into tears again, but she knew that that wouldn't present her as a 'worthy leader' or a 'daughter of Athena,' which I think is ridiculous seeing as she is the best leader AND the best daughter of Athena, because SHE was the one who found the Athena Parthenos.

"What do we have to do Chiron?" Jason said, numbly. He tightened his grip on Piper's hand and sighed as well.

"Well, have any of you heard of wizards and witches?" He asked, shifting on his centaur feet.

Annabeth turned again so that she was facing Chiron once more. "Like children of Hecate?" She asked curiously.

"Not exactly, wizards and witches are MUCH less powerful than children of Hecate, but some of them are related to Hecate, very vaguely. But mostly, they are normal mortals that Hecate has blessed with magical gift. And then the person, or people, that she blessed pass these traits to their own children. Understand?"

We all nodded, confused as to why he was telling us all of this.

"Well there is one wizard who is more powerful than most. He still isn't even nearly as powerful as a child of Hecate directly, but he does have a prophecy about him. Much like you didn't know your prophecy, Percy, he doesn't know it." I nodded, feeling horrible for this kid already. "When he was only one, a killing curse was directed towards him by an evil wizard, named Lord Voldemort. For some reason, though, the curse backfired and had, for the time being killed Voldemort."

"Hold on, does this Voldywart guy go by a different name also?" Nico asked.

"I believe his childhood name was Tom Marvolo Riddle, why?" Chiron answered.

"Ugh! Dad HATES this guy because he keeps eluding death. Dad's REALLY annoyed with him." Chiron nodded.

"That's to be expected, after all he did use Horcruxes." At that word, Nico and Annabeth both stiffened. Everyone else just exchanged confused looks.

"What's a Horcrux?" I ask, voicing everyone's question.

"A Horcrux is used to hide a piece of someone's soul so that they have a longer time to live." Nico answered.

I nodded, like I understood. Even though I didn't.

"This boy's name is Harry Potter, and Voldemort has come back and plans to pay Harry back for 'killing' him. Your job is to protect him at his wizarding school." Chiron stated.

"NO WAY! We are going to a WIZARDING SCHOOL?" Leo exclaimed, he was so excited that his ears caught on fire.

"Extinguish yourself, Mr. Valdez. And to answer your question, yes." Chiron said, tiredly.

Leo whooped and then patted down his ears to snuff out the flames.

"What's the school called, Chiron?" Piper asked curiously.

He sighed. "Well, the headmaster is an old friend of mine, and a descendent of Hecate. His name is Albus Dumbledore, and his school is called Hogwarts." There was complete silence.

Then the tension broke and we all burst out laughing.

"Ho-Hogwarts? What kind of a name is that?!" Thalia asked through her laughter.

Chiron looked at us all sternly, and we all managed to pull ourselves together. "I have no clue as to why it's named Hogwarts, but that is what it is called." Chiron told us. We nodded, still smiling.

"So what you all have to do is go undercover at the school, pretending to be normal wizards, and American exchange students. You will be sorted into whichever house that you best fit. Then you just do your best to protect Harry, and his two best friends; Ronald Weasley and Hermione Granger. Also, you will join this group called the Order of the Phoenix. They usually don't allow people your ages to join the Order, but I explained what you have done, and everyone agree that you all deserve spots in the Order. Everyone in the order knows that you are really demigods."

"How are we going to be able to use magic, Chiron? We aren't REALLY wizards, after all…" Annabeth piped up.

"Lady Hecate has blessed you all, at least temporarily. You will have to get all of your materials in England, at a special wizard's shopping place called Diagon Alley. When you arrive at the airport-" He was cut off.

"AIRPORT? We are NOT flying!" Nico, Hazel and I shouted, while Thalia looked green.

"Don't worry, Zeus has granted you all safe access through his domain as much as you want during this quest." Chiron continued. "When you arrive at the airport you will be taken to the headquarters by an odd looking man with red hair. His name is Arthur Weasley, and is the father of Ron Weasley, and many others. Harry and Hermione will also be staying with the Weasleys and the rest of the Order at headquarters. I KNOW that you will all be on your best behaviors for them." Chiron said, glaring at us all.

We nodded, rolling our eyes. He handed us each a huge sack full of gold, silver and bronze coins announcing that it was wizard money.

"You will leave as soon as everyone is ready. Meet at Thalia's tree. Argus will drive you all to the airport; your tickets are on your beds, along with some robes that you need to take with you. Oh, and by the way, you might see some familiar faces at Hogwarts." Chiron announced, and on that mysterious note, he dismissed us.

Annabeth and I walked in silence to my cabin. I lay on my bed while she packed.

"Seaweed Brain! PACK!" She shouted.

"I don't wanna." I whined. Annabeth rolled her eyes and then busied herself by packing for me. I was glad for that, because if I did pack for myself, I'd probably leave everything important here.

As soon as we were packed, we walked over to Thalia's ex-pine tree, where we saw the rest of The Seven already waiting.

I plopped down on the ground next to Frank and Annabeth took that as an invitation to plop on top of me.

"ANNABETH!" I shouted. "Get off…" I whined once more. She stubbornly shook her head. Everybody was watching us with amusement.

"Fine, but don't say I didn't warn you." I state. Then I began to tickle her mercilessly.

"Se-Se-Seaweed Bra-ai-ain! Le-lemme Go-o-o!" She managed to say through her giggles.

"Will you get off?" I asked, a teasing smile planted on my face. She was able to nod and the tickling subsided. She glared at me, but then started laughing once more. She gave me a quick kiss and then stood up.

"Let's go!" She shouted, gesturing for Thalia, Grover and Nico, who were at the bottom of the hill, to hurry up. As soon as they arrived at the top, we all piled into Argus's van and we were off to the airport.

TIME SKIP TO AIRPLANE RIDE

As soon as we managed to get on the airplane, Nico, Hazel and I started hyperventilating.

Annabeth laughed at our faces. "Remember? Zeus promised safe passage. And besides, two of his kids are on the plane also…" She told us. We nodded, but sill we gripped the armrests like our lives depended on it. Because that is what it felt like.

When we finally arrived in London, I felt like I was going to pass out, even though, as promised, there were no problems and no turbulence whatsoever. Annabeth shook her head and led me down the aisle and off the plane, with the rest of our companions not far behind.

We regrouped and then walked over to the baggage claim. We all got our baggage, me holding Annabeth's like the wonderful boyfriend I am, we started searching for an 'odd man with red hair.' He was easy to spot, especially since he was holding a sign that had our names written in Greek. Great Chiron, that's not going to call ANY attention to us, I thought sarcastically as I lead everybody to him.

"Hi my name is Arthur Weasley, are you the American demigods, posing as exchange students?" He asked.

Everyone nodded. Then it seemed as though everyone was looking at me.

"Introduce us, Seaweed Brain! You're the leader." Annabeth whispered to me in Greek and I obliged.

"My name is Perseus Jackson, but I go by Percy, I am a son of Poseidon. This is my girlfriend Annabeth Chase, daughter of Athena. This is our friend Jason Grace, son of Jupiter, his girlfriend Piper McLean, daughter of Aphrodite, our other friend Leo Valdez, he is a son of Hephaestus. This is Frank Zhang, son of Mars, and that is his girlfriend Hazel Levesque, daughter of Pluto, and, Nico di Angelo, son of Hades, and Thalia, daughter of Zeus and lieutenant of Artemis. Lastly, this is Grover Underwood, a satyr." I said, pointing to everyone as I said his or her names.

"What's Thalia's last name?" Mr. Weasley asked, puzzled.

"It's Grace. I'm Jason's older sister, but I don't use my last name." Thalia announced, and then her eyes flashed, daring Mr. Weasley to say anything else. He gulped and nodded.

"Well, you all seem to be around the ages of my son, Ron Weasley, and his friends Hermione Granger and Harry Potter, a little younger some of you, and a little older some of you also. Except you, Hazel and Nico, I think you're more around Ginny's age. Hazel blushed and Nico nodded. (AN: I actually don't know how much younger Hazel and Nico are, but just pretend that it's one year. Also, they'll still be put in the same year, 5th year.)

He led us to his car, a blue Ford Anglia and then looked at us. "Flying or no flying?" We looked at him in confusion. "What?" Annabeth asked.

"Well the car can fly, that will be quicker, if you are all okay with it…" He trailed off.

"Flying it is." Jason said, pulling Piper into the car. Everyone followed.