Hi, everyone!

This is a story made by my friend and me. We're not such good writers, so I hope you like it! And please, no haters. SIRIUSLY (get the pun?). If you don't like it, then stop reading. If you have any suggestion, comment it below.

Disclaimer: All the characters in this book belong to JK Rowling and Rick Riordan.

Okay, here it is!

Percy's POV

"Wake up!" A blurry figure said in front of me. I groaned and got out of bed. "Chiron has called a meeting in the Big House."

"Okay, I'll be there in a minute", I said, and Annabeth nodded and went. I sighed. It had been one month since we defeated Gaea and the giants. I hoped there wasn't another war coming. Even my luck couldn't be so bad.

Turns out, I was completely wrong.

I ran to the Big House where Annabeth, Jason, Piper, Leo, Calypso, Will, Nico, Thalia, Clarisse and Reyna, Frank and Hazel from Camp Jupiter were already seated. I figured that this must be something important since they had come all the way from their Roman camp. I took a seat.

Chiron closed the door behind us and before he could say anything, Jason piped up."I hope there isn't another war. We want some peace and quiet!"

"Well," Chiron said, "there is another war." All of us groaned."But, this time", he went on, "you will need to make allies with people who are not demigods."

"Mortals?" Frank asked.

"No, no, my dear boy. You see, centuries ago, when the gods where in England, Lady Hecate blessed some mortals with the power of magic. These people advanced on their own, passing down their powers from generation to generation. They too hide from mortals, or muggles, as they call them. They live in England, and are called witches and wizards."

"Witches and wizards? Who ride on broomsticks and wear pointy hats?" Leo asked.

"Somewhat like that, yes. But they are much more serious than the ones from fairy tales. They have also won a war, about a year ago. They go to Hogwarts School of Witchcraft and Wizardry-" At this, everyone laughed except Annabeth and me. We merely smiled. Of course, we knew all about that place. Our friends Hermione, daughter of Athena, Draco, son of Hermes, Neville, son of Hephaestus and Luna, daughter of Iris, all live there.

"Now," Chiron continued after everyone had stopped laughing, "Your job is to go there and protect a boy named Harry Potter from an evil wizard and his minions. Harry had defeated the evil wizard, but he has risen again and he wants to take revenge on Harry Potter by killing him and destroying the school. He is now stronger because of his alliance with Kronos and Gaea, who are back too. The evil wizard's name is Voldemort, and his minions are called Death Eaters".

"Lady Hecate has blessed you for this quest so that you can perform magic. All the things you need are already at Hogwarts. But, remember that you cannot reveal your real identities until I tell you to. The people going are the Seven, Thalia, Nico, Will, Reyna and Calypso. And this is the prophecy-

'Twelve demigods shall answer the challenge,

The defeated ones have risen to avenge;

You must delve deeper into magic's mind

To defeat mother and son of one kind.

The allies have made the enemy even stronger,

To destroy them, you must fight longer;

The Dark Lord of magic is no longer dead

Along with strategy, magic will blend

And the Mist, again, will need to bend.

The gifts received will withstand more power,

The dark cloud of doom over the family will hover;

The fate of the world lies in their hands

People of magic and heroes of ancient lands.'

"Okay...", I said. "When do we leave?"

"Now."

"Okay."

I went to my cabin and packed. Then we all went to Chiron and he said that we would be travelling by Pegasus. Yay! We went to the stables, and when everyone was on a Pegasus, I mounted Blackjack and we soared into the sky.

So that was Chapter 1!

If you liked it, please comment and vote!

I'll update soon.

See ya!