AN: First off, I want to say that this was inspired by the Disney special Wizards on Deck with Hannah Montana. Kind of. It's massively AU, so be prepared.
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Once upon a time, there three teenaged wizards. They lived in New York, and their parents owned a sandwhich shop. There names were Justin, Alex, and Matt. Now, even though they were wizards, since they lived in America they couldn't go to Hogwarts. But then their parents decided to move to England, and the day after they moved in, three owls flew down the chimney with letters in their beaks, inviting the three teenaged wizards to go to Hogwarts School of Withcraft and Wizardy.
On the other side of the world, three more kids were in a similar situation. Kevin, Joe, and Nick Jonas were also wizards, and vampires too, but unlike the others, they didn't know it yet. Then, one year, they went on tour to England, and a mysterious man with a bushy beard found them wandering around in Diagon Alley. They had accidentaly opened the passageway because they didn't know how to use their magic. Of course, to prevent anything like that happening again, the three young superstars were enrolled in Hogwarts, too.
Another young teenager, named Miley Stewart, was hanging out with her friends Lily and Oliver when they were attacked like Death Eaters. Miley could feel an unknown power surging within her, and suddenly the Death Eaters burst into flames. Lily and Oliver were scared, and ran away, but Dumbledore suddenly appeared and told Miley of her powers and dragged her to Hogwarts as well.
Coincidence? I think not!
For all these children would one day come together to eliminate the greatest threat to man and wizard kind. The evil Voldemort.