Welcome one and all to my traditional Christmas story! I am so excited to be doing this! I always love when Christmas comes around because that means I can start writing my Christmas story!

Interesting fact, I have actually had this story planned since summer.

This story is going to be slightly AU. The Stanchurian Candidate was the last event that took place before summer was over and Dipper and Mabel had to leave Gravity Falls. Since then, Stanley and Stanford bonded a little and have a relatively stable relationship. Not as good as it was when they were kids, but they tolerate each other and get along relatively well. Dipper doesn't know about Ford's relationship with Bill and in this universe, anything after The Stanchurian Candidate would be happening near the end of the next summer, when they come back to Gravity Falls when their thirteen. However, right now, Mabel and Dipper are coming back to Gravity Falls during the winter to spend Christmas with their Grunkles.

If anyone has any questions about this AU, feel free to ask.

I'm going to keep this first author's note as short as possible, so more information about this story and other things will be in the author's note at the bottom. Now sit back, relax, and enjoy the prologue for The Twelve Day of Bill-mas!

Disclaimer: I do not own Gravity Falls. This show is owned by Alex Hirsch and Disney. I also do not own Jingle Bells. The song is owned by James Pierpont.


"Oh!

Driving on the road,

In an old and creaky bus.

Over the hills we go,

Singing all the way!

Woo! Woo! Woo!"

Mabel pointed a finger at Dipper. "Keep it going, Dipping-sauce!"

Dipper sighed and chuckled at his twin's antics. "Mabel this is the," he paused, thinking. "…Two hundredth and sixteenth variation of this song. How many more are you planning to do?"

"As many more as it takes to get there!" was Mabel's optimistic reply. With that, the thirteen year old went back to singing her parody of Jingle Bells.

Looking away from his sister, Dipper's gaze fell to the woods that was blurring past his vision. The trees were bare of leaves but there wasn't a speck of snow to be found.

Mabel is not going to be happy about that, Dipper thought to himself. She was really hoping there would be at least a little snow here.

The younger twin was drawn out of his thoughts by Mabel's scream. "WE'RE HERE!"

Dipper perked up and he and Mabel clambered over the seats to squish their faces up against the window. Sure enough, past all the oak trees and land, the houses of Gravity Falls were coming into view. If they squinted hard enough, they could just barely see the Mystery Shack hidden away in the woods.

Mabel jumped up, nearly knocking off Dipper's signature hat. "Yes! Christmas in Gravity Falls, here we come!"

A grin spread across Dipper's face. "And we should be entering Gravity Falls right about…" He trailed off. Then a greeting sign with the words "Welcome to Gravity Falls!" flew past them. "Now!"

"Woo hoo! Christmas break in Gravity Falls! No school, no homework, no stress!"

"Monsters, demons, the supernatural!"

"Spending Time with Grunkle Stan, Great Uncle Ford, Soos, Wendy, Candy, and Grenda!"

"Getting to spend the holiday the Gravity Falls way!"

The siblings turned and grinned at each other. Then, hopping off the bus seats and jumping in the air, they high-fived and said simultaneously:

"Best Christmas ever!"

"Hey kids," the bus driver called back to them. "I'm gonna have to ask you to sit down until we have arrived at our destination."

The twins nodded and immediately sat down, the smiles never leaving their faces.

Dipper leaned back, relaxing in the bus seat. "Christmas in Gravity Falls," he sighed.

"Yeah," Mabel replied, copying his actions. "What could possibly go wrong?"

Dipper raised an eyebrow. "Mabel, you do notice that every time we say that, something always goes wrong? Whether it's a monster or people turning into zombies, nothing ever seems to go perfectly while we're in Gravity Falls."

"Pfft! I know that bro-bro. But that's during the summer! This is Christmas vacation! Ever heard of the term Christmas spirit?"

"Yeah, but I don't think monsters take holidays, Mabel." Dipper laughed.

"What? Of course monsters take holidays. After all, it's Christmas! So, I repeat, what could possibly go wrong?"


Bill Cipher disliked many things: Order, sanity, basically anything that wasn't chaos. However, one thing he didn't hate was Christmas. Now, that didn't mean that he loved Christmas, he just tolerated it more than other holidays.

After all, Christmas was the only time he actually got a break.

Being a demon who feeds on chaos is a lot harder than you might expect. You can't just throw a little fireball somewhere and call it chaos! It has to be planned to make sure each attack is as destructive as possible. And that takes a lot of work.

So, why did Bill take Christmas off? Simple. Christmas was chaotic with or without him. People rushed around trying to prepare food, get presents, and they had to deal with horrid snow storms and no power. He just sat back and laughed. He could watch glorious chaos unfold without having to lift a finger. It was the perfect Christmas gift!

He had been doing this for centuries, and so far, everything was good. However, the one thing he did not count on was a certain pair of twins coming back to Gravity Falls a lot sooner than he had expected.


Bill sat in his study, looking through his energy ball at all the chaos around Gravity Falls. He couldn't help but laugh at the fight going on about who gets the last "latest toy" of the year for their kid.

Flesh bags are just so stupid this time of year! Bill thought with a laugh. Seriously, why punch a man in the nose for a stupid toy.

The dream demon sighed and then chuckled. "Well, more chaos for me!" He snapped his fingers and the scene in the ball turned to a Christmas breakfast rush at the diner. He was about to zoom in to get a better view when he felt something.

A very familiar something.

He sensed three more people coming into Gravity Falls. One was a bus driver that he felt come and go from time to time, but the other two auras he felt were ones he thought he wouldn't feel for at least another year.

Bill froze. "No." With a growl, he snapped his fingers and the image of an old bus appeared in the energy ball. He zoomed in on the picture and, sure enough, Dipper and Mabel Pines were happily chatting on the bus, smiles etched onto their faces.

"Why are they here?!" Bill screamed. "I thought I had a year off from those annoying brats! They weren't supposed to be back till next summer!"

With another snap of his fingers, Bill listened in on the conversation.

"Woo hoo! Christmas break in Gravity Falls! No school, no homework, no stress!" Mabel shouted.

"Monsters, demons, the supernatural!" Dipper continued with the same amount of enthusiasm.

"Spending Time with Grunkle Stan, Great Uncle Ford, Soos, Wendy, Candy, and Grenda!"

"Getting to spend the holiday the Gravity Falls way!"

Then the two got out of their seats, jumped in the air, and high-fived, shouting, "Best Christmas ever!"

The scene continued on but Bill didn't bother listening anymore. He felt his eye twitch. "Christmas…in Gravity Falls," he said slowly. When he finally digested the words, his color scheme changed to a glowing red, white, and black. "Christmas in Gravity Falls?!" he shouted in rage.

Bill jumped off of the couch he was sitting on, took the energy ball, and threw it into a nearby wall. It smashed into a million pieces. "Why can't those stupid, annoying brats just give me time to myself?"

He paused and took a deep breath, his colors slowly fading back to yellow and black. "Okay, you know what, I can deal with this." He looked up and glared at the grey wall in front of him. "I just have to find a way to drive them out of Gravity Falls. If I can destroy dimensions, I'm pretty sure I can get two kids to leave one measly town."

The dream demon sat back down with a sigh. "Now, I just have to wait until one of them falls asleep."


"So, that's why Dipper no longer sticks his nose in fake volcanoes!" Dipper groaned and threw his head in his hands, his cheeks heating up after Mabel finished telling the story. His cheeks only got hotter when he heard Grunkle Stan and Mabel's laughter.

He felt a hand pat his back reassuringly. "It's alright Dipper," Ford said. "We all make mistakes."

"Yeah, but what made you think sticking your nose into a paper volcano was a good idea?" Grunkle Stan asked with a snort.

Dipper groaned again. "Don't. Ask."

Ford glanced at his watch and spoke up. "Okay kids, time to go to bed."

"What?"

"Already?"

"Sorry kiddos, but tomorrow you have to work," Grunkle Stan replied

Mabel looked appalled. "On Christmas vacation?"

"Christmas time is when suckers are willing to pay the most!" Stan said with an evil grin. The rest of the family could practically see his eyes turn into dollar signs.

"Besides," Ford continued with a knowing smirk, "I have a feeling you two aren't going to get much rest no matter what we do."

"Nope!" Mabel cheered.

"My point exactly. So, I suggest you two get up to bed."

The Pines twins looked at each other and sighed. "All right." Then the two ran up to their room, Mabel giving Stan and Ford a hug on the way out.

Once they were in bed, Mabel in her Christmas pajamas and Dipper in his regular, long sleeved ones, Mabel looked over to Dipper and smirked. "So, what do you think is gonna happen while we're here?"

Her twin grinned. "I don't know. But hopefully, it will be weird."

"It's Gravity Falls!" Mabel laughed. "When is anything not weird?" She sighed contentedly and rested her head on her pillow, looking up at the ceiling. "This is going to be the best Christmas ever." Dipper's response was a mumble and the shuffling of covers.

With that, Mabel closed her eyes and drifted off to sleep.


…Only to wake up ten seconds later.

Mabel opened one eye, then the other. She stood up and stretched, making her muscles sigh out of relief.

"Well," she muttered, still a little sleepy, "this is a new way to start a…dream…" She trailed off near the end, finally noticing the bland white, black, and grey colored field surrounding her. It looked familiar. She put a hand to her chin in thought.

"Hmmm… This is a first for me. Last time I checked, my dreams are about three hundred times more colorful with talking animals. This just screams that something is going to come up behind me and scare the sparkles out of me."

"WHAT ARE YOU DOING HERE?!"

"GAH!" Mabel jumped five feet in the air and spun around, falling flat on her back. Looking up she saw a very familiar, very angry, demon. She gasped. "It's the triangle dorito guy!" Then she paused. "Well would you look at that. Someone did sneak up on me." She shrugged. "Huh, who would of thought?"

Bill narrowed his eye at her at the dorito comment. "I am not a dorito. I'm a dream demon. Now, I'll ask again: What are you doing here?"

He, of course, already knew that she was in Gravity Falls for Christmas, but he would like to know why her parents shipped her and her brother off here instead of making them stay at home for the holiday.

"I don't know why I'm here," Mabel stated, standing up and dusting off her pajamas. "You're the one who put me in this Dreamscape."

The dream demon's eye twitched. "I meant," he growled, his already red color turning darker, "why are you in Gravity Falls?"

"Oh," she shrugged, "for Christmas."

"I mean, why did your parents let you come here? You should have been as far away from this town as possible." Bill was practically forcing himself not to scream, every word he said laced with venom.

Mabel made an "o" motion with her mouth. "Why didn't you just ask that in the first place?"

Bill had never wanted to kill someone more than in that moment.

"Well, our parents noticed how much we loved Gravity Falls and decided that since we had so much fun and didn't really get to see our Grunkles too much, that they would let us come for Christmas! Dipper and I were so excited!"

Of course you were, Bill thought to himself with a groan. He took a deep breath, his colors changing back to yellow and black, and he asked another question. "So, Shooting Star, exactly how long are you and Pine Tree planning to stay?"

Mable paused and thought for a second. "Until the twenty seventh, I believe. Mom and Dad wanted us to be home by New Years so they told us to be back before then."

Bill felt his eye twitch once again. "So, you're saying that you're going to be here for fifteen days."

"Yep!" Mabel replied cheerfully.

"And you're going to be here until after Christmas."

"Right again!"

It was silent after that. Bill looked at Mabel, giving her a death glare. The thirteen year old stared back, only slightly aware of his current mood.

"So…" Mabel drawled after a minute of awkward silence. "Could you send me back to my regularly scheduled dream? Magical Unicorn of Glitter Land the Third is calling my name!"

The dream demon twitched, and with a snap of his fingers, Mabel was gone in a flash.

Bill stayed floating in the same spot for a full five minutes till he finally came out of his rage induced shock.

"Why," he seethed, "can't those two brats just give me a vacation?!"

Then he paused. A thought hit him straight in the head and he started laughing.

"Ha! Why am I getting so worked up over this? Like I said before, I can destroy dimensions with the snap of my fingers! Getting two dumb brats out of a dull minded town should be easy." He conjured up his cane and put both of his hands on it in thought. "Hmmmm… But how to do it…"

An idea struck him.

"What the heck! In the spirit of the holidays, why don't I ruin their Christmas?! It shouldn't be too difficult. Plus, I get an added bonus of seeing some hilarious entertainment."

Bill put his hand to his would-be forehead and started laughing like a maniac. After a moment, he stopped and sighed.

"Wow. Did I really just start laughing after I declared to take away their Christmas? I sound like some cliché villain from a corny Christmas movie!" He crossed his arms and sighed again, a dangerous look appearing in his eye. "Well, unlike those idiots in the films, I'll actually succeed and not be sucked in by the love and joy of Christmas." He gagged at the last sentence. "Gosh, I sound like some sort of Scrooge."

Bill rolled his eye. Then, if he had a mouth, he would have smirked. "And you know what? Just because I sound like a Scrooge and it's the holidays…" He snapped his fingers.

"Bah humbug!"

The dream demon disappeared in a flash.


Hello everybody and welcome to this year's Christmas story: The Twelve Days of Bill-mas! I am really excited to be starting this story and like I said at the top, I have been planning this since the summer.

One thing I do want to say before anything else is that I'm sorry in advance for any spelling or grammatical errors you may see. You may be wondering why I am saying this and I will tell you why. This story will be updating every single day until Christmas, which will be the day when the last chapter is posted. That's right. This story will be updating every. Single. Day. Because of my busy schedule the past couple of months, I haven't been able to write as much as I had hoped. This means that I don't have any of the chapters written in advance. I have to write and post them all on the same day. That's why I'm apologizing now for any mistakes there may be.

Having to do with updating, there will be fourteen chapters including the prologue and epilogue, which is why I am starting today. Now, I just said I will post everyday and I promise that I will try my best to do this. If for some reason I am unable to write or post something that day, I will either post two chapters on the same day or, most likely, combine two chapters into one. I'm hoping this will not happen, but I am just giving you all a heads up in case it does.

The length of these chapters won't be as long as my other stories. I usually have anywhere between four and seven thousand words for my chapters, but because I have to write, edit, and post the chapters all in one day, I believe the chapters are going to be anywhere between one and three thousand words long.

I think we got all of the business and technical stuff done and over with. Now, I would like to thank you all so much for reading the prologue and I hope you enjoyed! I would really appreciate it if you left a review, followed, or favorited the story. I always smile when I get one of those. If you have any constructive criticism or something you think I need to improve on, please tell me. I really want to know what you guys think of my story. I welcome constructive criticism with open arms!

Well, once again, thanks for reading and I hope you'll read the next chapter! Until then…

Peace! GamerFan369