I Don't Own Harry Potter or Gravity Falls

A/N: This was a random Idea that came to me while listening to HP Music. My other stories I will continue, but for now, Plot bunnies are murder. Anyone could use this Idea, just give credit where it is needed and whatever.

Summary: Dipper wakes up on the train with no idea how he got there. Vague memories of faces and names pop up, and someone keeps talking to him, telling him all the things he should know. But why is that? And why is he here of all places? *Takes place after Sock Opera. Dumbledore Bashing, Ron, Molly, and Ginny Bashing. Powerful Harry and Dipper Don't Like, Don't Read*

Upon waking up, Dipper could hear a name being called. However, it wasn't his name, he slowly opened his eyes to see a boy and a girl leaning over another boy who had messy black hair and pale skin. The red-haired one with soft blue eyes looked at Dipper, he smiled.

"Mione, seems Max has waken up also." Dipper blinked, how did these two known his real name? The girl with bushy hair and brown eyes quickly hugged him, Dipper's eyes widen, what was going on?

"Are you okay?" she asked him, Dipper nodded slowly to her. She smiled in relief at that.

"You had us worried Max, you and Harry both." she told him, Dipper blinked at this. Her face looked so familiar to him, and a name kept popping up in his mind. Well, it was worth a shot.

"Hermione, I'm fine, just cold is all." he told her, she nodded slowly. Guess he was right, Dipper looked at the red-haired boy, a sickening feeling pushed its way through, he had a dull feeling he shouldn't trust that boy. Also, his voice sounded different, he had a British accent now! This day just got weirder, how did he get here?

Dipper pondered this question for a moment, last he remembered he was battling Bill Cipher for control of his body, then after the fireworks, it all went black. Then he was here, waking up on a train going to, who knows where.

Dipper blinked as a small voice in the back of his mind told him the word, 'Hogwarts.'. He frowned, what name did that mean, was that the place he was going to? His head hurt, too many question at once, and he was no super genius. He could have sworn when he thought this a low chuckle rang in his head. Okay, now he was very confused.

'All in good time, for now, play the part.' he heard, sighing, Dipper smiled at them.

"I'm fine, just dizzy is all." that's when he noticed a man who was tending to Harry, or that's the name that Hermione had said and what that 'voice' was saying. The man looked at him, as suddenly a name registered.

"Here, eat this it will help." he handed Dipper something that looked like Chocolate. Well it was as the guy, Professor Lupin, said to him. Dipper took a small bite of it, and smiled at the warmth he felt run through him. He nodded thanks to Professor Lupin.

At that time Harry woke up to the sound of Hermione calling his name. He seemed just as confused as he looked around.

"W-What happened?" he asked, "Who screamed?" he asked, Ron, the red-haired boy, frowned at that. They tried to tell him that no one screamed. Professor Lupin sighed as he handed Harry some chocolate also. Harry asked him what it was that attacked them, Dipper had a vague memory of a black cloak figure before passing out on the stage, and a loud scream that filled his ears also.

'That was a dementor, one of the guards of Azkaban." Professor Lupin told them, "it was patrolling the train in search for Sirius Black." Harry looked at Dipper, with an expression that seemed he knew who that guy was already, and strangely so did Dipper.

'Play along.' the voice whispered again. Professor Lupin sighed, "Now if you'll excuse me I need to have a little word with the driver." he got up and headed for the door, he looked at Harry.

"Eat, you'll feel better." Dipper nodded to his friend, or was he his friend, sure seemed right to think this. Harry took a small bit as he looked at Ron and Hermione.

"What happened to us?" Harry asked as he looked at Dipper, who had the same thought. Ron frowned a bit.

"Well you two sort of went wity...we thought maybe you both were having a fit or something." he told them, Dipper frowned at this, so did Harry.

"Did either of you two, you know, pass out?" Dipper asked, Harry looked at him than at them. Ron looked down, Hermione shook her head.

"No," Ron said, 'I felt weird though...Like I'd never be cheerful again.". Harry looked at Dipper, then sighed.

"But someone was screaming..." he said, looking down.

Dipper nodded to him, "I heard it too, a women.". Hermione shook her head slowly.

"No one screamed you two." she told them gently. Dipper looked outside as did Harry. Both of their thoughts swirled. Dipper was very confused now, wondering what had happened to them. For him, how did he get here, and how do these two know it. For some odd reason, it was very comforting near Hermione and Harry, but not Ron.

'Harry knows.' the voice told him, Dipper thought on that, as he stared blankly outside at the falling rain. Something told him it was only going to get more confusing from here on out.

If you all like I'll continue this, for now it's just a random idea.