Hunting down dementors was far more in line with the Winchesters' comfort zone. Sam took one end of the train, his Patronus slithering before him and striking at all dementors that came within its reach. Dean took the other end, his impala charging down all of the dark robed figures. To Dean's delight he saw another Patronus belonging to Remus join his in the hallway. "Nice to see you." Dean grinned, watching Lupin's silver wolf and his impala work in concert to send a dementor shrieking away.

"Though I wish it were under better circumstances, the entrance feast for instance, it is nice to have someone capable to rely on." Lupin said with a wry grin. He glanced back towards the end of the train that Dean had come from and asked, "I assume Sam is handling the other end of the train?"

"Yeah, he's got it," Dean nodded. "What's with these things attacking the train anyways?"

"Oh, they aren't attacking," Lupin assured him. "No, I would hazard a guess that they are searching. Sirius Black escaping has, I am sure, left them rather upset. Besides a train full of students excited about going back to school would be hard for them to resist. Undoubtedly they thought that they would conduct a search and feed whilst they were at it."

"On a train full of kids?" Dean demanded, stowing his wand away in his pocket as he and Lupin came upon the end of the train. "What kind of crap is that?"

"The very unfortunate kind I am afraid," Lupin said gravely. "Although it seems that the danger is gone. If you don't mind, one of the students in my cabin was rather badly affected by the dementors. I thought I might give him some chocolate and help him recover some of his strength. We should be pulling into the station soon enough at any rate."

"Yeah, I want to find Sam and make sure he is alright," the Winchester agreed.

"I assume that the three of us will be having our meeting with the headmaster at the same time," Lupin mused. "I think it would be good if Sam and I sat down and hashed out this schedule between us. I assume that you will want to do the same with Hagrid?"

"Who?" Dean asked blankly, wishing Sam was here to provide him with information.

"Rubeus Hagrid, your co-teacher?" Remus asked slowly. A light went off behind his eyes and a rueful smile spread across his face. "Forgive me, I had forgotten momentarily that Hagrid's appointment to Care of Magical Creatures Professor was not a well-known status change."

"Dean!" Sam called, rushing down the passageway just as the train's brakes screeched. "Remus! You two okay?"

"I would hope that a Defense Against the Dark Arts and a Care of Magical Creatures would be able to handle themselves well against a few wayward dementors." Remus said, smiling to show he was not to be taken seriously. "Well, if you two will excuse me I will see you at our meeting with the Headmaster."

With a nod, Remus left the two brothers just as students began to file out of their various cabins. "So, this our stop?" Dean asked once Lupin was well out of earshot. "You know, to find Crowley and Cas?"

"I think so," the younger Winchester said uncertainly. When Dean fixed him with a look, he returned it defensively. "Look man, I'm doing the best I can. Hogwarts is close to Hogsmeade. I don't remember exactly where the kids get dropped off at."

"Well, let's hope it's close by," Dean said, glancing outside and seeing a monstrously huge man standing there with a lantern illuminating his bearded face. "Holy crap, that guy is a giant."

"Half-giant," Sam corrected, peering out and seeing Hagrid standing there speaking happily to Harry, Ron, and Hermione. "His mother was a- nevermind. Don't mention it, that doesn't really get discussed until the fifth year."

"Oh, son of a bitch." Dean muttered as his gaze swept past Hagrid and saw two familiar figures standing there. "Guess we don't have to search after all."

When Dean and Sam approached the demon and the angel Crowley glared at them venomously. "You stupid morons," he spat. "Would it have killed you, just once, to leave things be and not interfere with an all-powerful being?"

"Hey, you can't blame us for this one," Dean protested, making a 'stop' gesture with one hand. "It's not like we knew what the hell we were walking into. How did you guys make your way here, anyways?"

"Your pretty little harp player seems to have extensive knowledge of this realm," Crowley, still clearly annoyed, said sourly. "That and your new friend, the Guide, instructed us as to where we were to meet you. Wouldn't hear a word of any other plan. I tried."

"Yeah, she pretty much told us the same thing." Dean offered. "No leaving this place until she says so, or whatever."

"She's disabled our powers as well," Castiel said gravely. "Not that it would have done us much good. After she transported us here I, very briefly, had full access to my powers once more. I didn't pick up anything on angel radio."

"And I even tried to call Hell," Crowley admitted. "Not a word. It's like it didn't exist at all."

"You tried to call Hell?" Sam asked disbelievingly. "Who did you kill to make the call?"

"I don't know." Crowley said, clearly more concerned with Sam's annoyance than the murder itself. "Some fellow in one of those silly little robes you are wearing."

"Crowley you can't just go around killing anyone you want in this world!" Sam whispered severely, leaning close so that his nose was only inches from Crowley. "If you jack up this timeline we can't predict what will happen and that leaves us up the creek."

"Oh, calm down squirrel," the demon said in a bored voice, taking a step back. "After our little attempts of getting into contact with our respective contacts, the Guide showed up. Resurrected that fellow whose throat I cut and sent him on his way none the wiser. We had a lovely little chat about how we are stuck in this world and how we have to play by her rules."

"Yeah, she gave us the same shpiel." Dean commented, glancing back to see Hagrid as he ferried a bunch of frightened looking children towards a dark lake. "Did she tell you what she wants you to do here?"

"I am here to study something called a Muggle." Castiel said, somewhat uncertainly. "Based on the knowledge that Metatron gave me regarding literature I can only assume that she wants me to capture and study the anatomy of a non-magical human. Of course, I will have to study a magical human first. Do you think finding someone will be very hard?"

"No, Cas, you aren't going to study the anatomy of humans," Sam said. "You are supposed to… Oh no."

"What's up?" Dean asked worriedly. "Something wrong?"

"Muggle Studies is a class focusing on getting wizards to better understand non-magical people. Basically, normal every-day humans."

"Oh, crap." Dean said, immediately seeing the problem. "Cas, buddy, I hoped you were paying attention back on our world."

"I am an angel, I always pay attention." Castiel said simply, not following Dean's line of thinking.

"Well, that's all well and good." Crowley said, placing his hands into his pockets. "Perhaps you can enlighten me, Squirrel, on who this Madam Pomfrey woman is?"

"Uh, yeah, she's the school's nurse basically," Sam told him. "She runs the hospital wing, why?"

"Bollocks." Crowley said, staring down at the ground with slightly narrowed eyes.

"The Guide told him to report to her once he gets to the school," Castiel said.

"Wait, so you are going to be healing people and making them all better Crowley?" Dean cackled and shook his head. "Oh, that's rich."

"Excuse me, professors." A gruff voice came from behind them and Dean turned, expecting to see someone about his height. Instead he saw the stomach of a very large man, his eyes traveling up until he met Hagrid's. "But they won't start the feast until you meet with Professor Dumbledore. Got something special in mind for you."

"Oh, yeah, sorry about that." Sam apologized. "Just sorting a few things out."

"Oh, it's alrigh'," Hagrid smiled. "Out o' curiosity, which of you are Dean?"

"Me," Dean said, looking Hagrid up and down several times.

"Rubeus Hagrid," the half-giant said, extending a hand and crushing Dean's by accident once the hunter placed his hand in Hagrid's. "Lookin' forward to workin' with you this year. Thought after dinner you and I could have a chat abou' what we are going to be teaching the kids this year."

"Uh, yeah sounds good." Dean said, retrieving his hand and flexing it several times behind his back. "So how are we going to get to the school?"

"Oh, I got a few trained thestrals that pull some carts to the school," Hagrid said, raising his chin proudly.

"Thestrals huh? Awesome." Dean said, smiling blankly as he did his best to bluff past this.

Hagrid gave an approving nod and grunt, turning down the train stop's brick steps and leading the way towards the carts without another word. "What are thestrals?" Dean asked under his breath to Sam, low enough so that Hagrid couldn't but Crowley and Castiel could.

Sam was quiet for a few beats in which Dean expected a response. He turned to his younger brother, another question on his tongue, but he stopped short when he saw the grim expression on his brother's face. "You'll see," he said softly, almost mournfully. "Trust me, you'll definitely see."

Hello readers, Hallowed here. A few of you have expressed interest in seeing crossovers similar to this. Thought it might be interesting to take requests, especially as I am planning on having our friend the Guide send the Winchesters to a few more worlds. So, where would you like to see them go at the conclusion of this story?

Cheers, Hallowed