Jack Frost navigated the crowded train station alone, struggling to control his luggage-filled trolley. He squinted at the handwritten instructions in his hand.
"Through the wall?" Jack said aloud. "That's impossible!"
Jack looked back at the solid looking, brick wall, back at the paper, then at his surroundings, hoping to see someone who could help.
There was the security guard who had accused Jack of playing a prank when he had asked him ten minutes earlier.
"You look lost." Came a voice from behind Jack.
He turned to see two similar looking girls each with a laden trolley. One seemed to be about his age, with strawberry blonde hair, the other was maybe 14, with platinum blonde locks. It was the older one who had spoken to him.
"Um, yeah, I'm looking for platform 9 3/4?" Jack hoped these girls could help him.
"Of course, we're going there too, it's a little further down. You can follow us." She pushed her trolley forward and Jack followed behind her, the younger girl fell into step beside him.
"I'm Anna, by the way, and that's my sister Elsa. Is it your first year?"
"Yeah, and I'm Jack." He replied.
"It's my first year too! Elsa's been going for two whole years and leaving me at home, I'm so excited to finally be going with her!" Anna seemed a little giddy.
"So, you've known about the whole... Magic thing?" Jack asked.
"Well, yeah, my parents worked for the ministry of magic, why? Are you a muggleborn?"
"I- um, I don't know. I have no idea who my parents were."
"Oh."
"Here we are!" Elsa announced. "Who wants to go first?" She indicated to a section of the brick wall that, to be honest, didn't look any different from the rest of the wall.
"Uh, why don't you show us how it's done, sis?" Anna looked at the wall nervously. At least it's not just me, Jack thought.
"Sure, just make sure to follow me, okay?" Jack and Anna nodded.
Elsa positioned her trolley and speed-walked right through the wall! Jack couldn't believe what he'd just seen, she'd been there, then she was gone.
"Wow." He said out loud.
Anna laughed, "Do you wanna go next?"
"Uhh, together?" Jack smiled nervously.
"Sounds good, on three." They both turned their trolleys to face the wall.
"One..." Jack said.
"Two..." Anna continued.
"Three!" They said together and ran for the wall.
Jack shut his eyes right before impact, and when he opened them, he was in an entirely different train station, a scarlet steam engine gleamed with the words 'Hogwarts Express' painted on the side.
He turned to look at Anna who was looking around with similar amazement.
"I'm gonna go find a place on the train." Jack told her.
"I'll go find Elsa, see you later!" They parted ways.
Jack couldn't help noticing all the happy families surrounding him. A few bits of conversation reached his ears.
"Send me letters, I want to know everything." A dark haired woman, told a golden haired girl.
"Yes, mother." The girl answered.
"And if it seems even the tiniest bit dangerous, I'm taking you home, don't think I won't, Rapunzel." Her mother warned.
"Yes, mother."
"And-"
"Be careful, and stay away from ruffians and thugs, and don't participate in any dangerous activities. I know, mother, you've already told me. I'll be fine!" Rapunzel seemed to have gotten tired of her mother's endless worries.
The woman smiled sadly and kissed her daughter on the top of her head. "I love you very much, dear."
"I love you more."
"I love you most!"
With that, the golden haired girl gathered up her belongings and hurried into the scarlet steam engine, accidentally bumping into a fire-haired five-year-old. She apologised and hurried on.
"Why can't we go too?!" A boy, identical to the one she had almost stood on, complained to his parents.
"Because you aren't old enough," their annoyed looking father explained. "Once you're eleven, you'll be able to go to Hogwarts, too."
"But we want to go now!" A third boy whined.
"Oh, hush, just be happy for your sister." Their mother said, "I am so proud of you, Merida! My little girl, growing up and going to Hogwarts!"
The eleven year old girl, with the same wild red curls as her father and brothers, groaned, "I know! Now can I please just get on the train?"
"Oh, go on!" At her mother's words, Merida snatched up her suitcase from her father's hand and pushed through the crowd to the Hogwarts Express. "Don't forget to write!" Her mother called.
Merida pushed past various people, noticing how unique everyone was. There was a man almost as big as her father, but with brown hair and more... Viking-ness to him, waving goodbye to his runty son, already on the train.
"Bye, Hiccup!"

"Excuse me?" Hiccup looked up from his book to see a girl with really long blonde hair hovering in the doorway of his compartment. "Do you mind if I join you?"
Hiccup stared at her hair for a moment, before remembering that she was waiting for his answer, "Yes. I mean no. I mean, go ahead, I don't mind. Sorry." He shrunk further into his seat, way to go, Hiccup! Not even at school and you're already embarrassing yourself!
The girl smiled and sat down across from him.
"I'm Rapunzel." She put out her hand.
"Hiccup." He shook it. "Are you a first year?"
"Yeah, you?"
"Yep!"
They drifted into awkward silence and Hiccup amused himself by staring at the landscapes racing by through the window.

Meanwhile, Jack Frost was still looking for a compartment. He had been in one, until two scary looking fifth years had come in and glared at him and the other two second years he'd been sitting with, until Jack had run away.
Normally he would have stood his ground a little more, but he didn't want to get into a fight before he even got to the school. At least, that's what he told himself to justify his cowardly behaviour.
But now all the compartments were full, or had some elite-looking clique that he probably shouldn't disturb in it. So he just hung out in the corridor. Doing nothing. Until he heard a familiar voice yelling.
"Well excuse me Mr. Fancy Pants, I didn't mean to step on your Parade of Jerkness!"
Jack knew that voice, it was Anna. He went toward the sound.
Another first year boy in fancy clothing was glaring at Jack's new friend. Oh no, Jack thought, this looks like trouble!
Making a quick decision to intervene, Jack ran up to the other boy and gave him his perfected icy glare, "Hey! Pick on someone your own size!"
The bully looked momentarily scared, then just shrugged and walked away. Jack turned to his friend.
"Are you okay, Anna?"
"I'm fine, it's only Hans after all." She said, loud enough for, probably, the whole carriage to hear. "He's a total jerk! I've known him for years. He used to visit us a lot, his family is one of the only other wizarding households in miles of my home, and he'd befriend me, and then steal my toys. I haven't seen him in years, though, not since- well, it doesn't matter. Thanks, for saving me."
"I think technically I was saving him, I know a girl who's about to blow up when I see one, and I think you can take care of yourself."
She laughed. "Well, I'm grateful anyway! I was just on my way to the restroom when Hans interrupted, and I'm really busting, so I'll see you later... Again."
Jack smiled, "See ya!"
Anna ran off to relieve herself and Jack went back to looking for an empty compartment.
Finally he decided on one with two first years in it, a blonde girl, and a brunet boy. Deciding to make an impressive entrance, he swung open the door, swaggered in, and loudly announced.
"Greetings fellow younglings! I am Jack Frost, the Amazing! May I give you the honour of joining your humble seating area?"
For a moment the two kids just stared at him in stunned silence, then the girl burst out with laughter.
The other boy joined in and Jack took that as permission to sit with them.
After a few minutes, the explosive giggles subsided enough for them to introduce themselves.
"I'm Rapunzel, and he's Hiccup! *giggle* Its an honour to meet you."
"And I'm Merida!" Came a very Scottish voice from the door where a wild-haired girl now stood. "I heard your... Impressive entrance and decided to join."
"It's nice to meet you, oh fire headed one." Jack smirked. Rapunzel giggled again. Merida glared at the brown haired boy.
Hiccup cleared his throat to keep anyone from murdering someone else.
"We're getting close to Hogwarts now, we should put on our robes."

"Good evening, and welcome, my name is Professor Tooth, I'm the deputy headmistress of Hogwarts." A petit woman with multicoloured hair stood at the top of the staircase where all the first years stood. "In a moment we will be joining the rest of the school in the great hall, there we will commence the sorting ceremony. Please remain here, and quiet, I will return when they are ready for you."
Professor Tooth quickly slipped through the large set of doors set off to the side and all the first years erupted into chatter.
"What's a sorting ceremony?" Asked Jack.
"Is it dangerous?" Asked a blonde girl a few steps down.
"Don't worry about it! My sister says it's no trouble at all!" Anna announced.
"Well my brother said you have to defeat a troll, or die trying!" Hans argued.
"A troll!" Rapunzel panicked.
"Or a dragon!" Guessed an Asian girl at the back.
Then Professor Tooth returned and waved her hands for quiet. "Please follow me."
They did.
They walked in a group through the middle of a massive room with floating candles in the air. There were four tables, each one filled with students of varying ages. Anna waved to her sister when she passed her, and a few others acknowledged siblings when they could.
When they finally made it to the front of the room, Professor Tooth pulled out a three legged stool and put an old, worn hat on top.
The first years were very confused until the hat burst into song.
They were too shocked to fully comprehend what the hat said, only that it was explaining the differences between the houses.
When it was done, Tooth stepped forward again.
"When I call your name, you will sit on the stool and I will place the hat on your head." She took a sheet of paper out from her pocket. "Arendell, Anna."
The strawberry blonde bit back her nervousness and walked up to what was, in her mind, the guillotine.
Tooth put the hat over Anna's braided hair, it was so big that it fell past her eyes.
There was silence for a moment then the hat suddenly yelled "GRYFFINDOR!"
Tooth took the hat off of Anna's head to reveal her smiling face. She hurried over to the cheering table covered in red and gold.
Tooth cleared her throat and the hall fell into silence.
"Abuaba, Aladdin."
A dark skinned boy sat on the stool and was sorted into Hufflepuff. Then a girl named Ariel was put into Slytherin. A few others went past, Merida wasn't totally sure which house whoever they were went into.
"Dunbroch, Merida."
The Scot strutted to the stool and sat. Tooth placed the hat on her fiery curls, then pushed it down a little so it was on Merida's head, rather than just her hair.
Merida heard the hats voice in her mind.
"You're a brave one, from a brave family. I remember your father, Gryffindor to the bone, I barely even had to think about it! But you're not just brave. I sense you'd turn your own mother into a bear just to get what you'd want, that shows great ambition, so I'll put you in SLYTHERIN!" The hat announced that last word to the whole room. Tooth took the hat off Merida's head and the Scot raced over to the table covered in Green and Silver as the next first year was called.
Rapunzel dozed off a little as different children were sorted into different houses. She faintly registered when Jack was sorted into Gryffindor, and Hiccup into Ravenclaw, until finally.
"Gothel, Rapunzel."
The blonde girl tried to stop shaking with nerves as she walked to the stool.
The world went dark as the hat blocked out the light.
"Now here's a tricky one!" The hat said in her mind. "Smart, loyal, brave, and that little bit cunning. Where should I put you. I don't think those Slytherins would be good for you, so not there. I hate to think how those rowdy Gryffindors would bring out that fierceness I see. Ah, I know! HUFFLEPUFF!"
Rapunzel sat down on the table covered in yellow and black.
Once the sorting had finished, and Headmaster North had said a few mildly important words, the feast began!
Rapunzel looked to either side as food appeared in front of her and spotted her three new friends.
Jack was talking to a strawberry blonde sitting next to him.
Hiccup was trying to ignore a nerdy boy in glasses who was talking mostly with his hands, while accidentally knocking down goblets.
Merida was glaring at Hans Southern, who had, unsurprisingly, been sorted into Slytherin, and appeared to have said something offensive to her.
Rapunzel nodded to herself a little. These were her new friends. And she was going to try her hardest to keep them that way.

A/N
Hey! I've been thinking about this story for a little while, mostly from my disagreement with the sorting of the Big Four. I have good reasoning behind this arrangement and I can rant about it, which I will upon request. If, you know, you think I'm wrong and want me to explain myself. Or something.
So, please give me constructive criticism, and, if you want, check out my other stories. I have two more RotBTFD or RotBTD stories going. And, like, no one reads any of my stories, probably not even this one... I'll stop babbling now.