OK I've scrapped the reunion falls idea and have come up with a better one. I have a faint idea of the plot and there may be a mention of billdip in future chapters. I'm hoping I'll keep writing this because after I've finished a first book I normally just give up on the first chapter of the second one. Well, I hope you enjoy :D

Pacifica Northwest had never run this fast in her life. She didn't know where she was going but she hoped it was the way to the mystery shack if not, she was screwed. She could hear heavy footsteps behind her, they were getting closer every stride. The twelve year old held her breath, closed her eyes and ran into a bush, hoping she could hide and find out where she was.

She could hear the footsteps slowing to were she now sat. She curled up and tried to make herself as small as possible.

"Where are you llama?" His strange voice echoed in the empty forest, making Pacifica shiver.

More footsteps, this time heading from the opposite direction. They stopped just beside the bush.

"Dipper?" A familiar gravelly voice.

Pacifica, careful not to give her current location away, peered through a gap, watching the old man walk out to the brunette with raised eyebrows.

Pacifica wanted to yell out to the old man to run but she kept her mouth shut, just watching as he got closer.

"Fez"

The old man stopped in his tracks, adjusting the maroon fez on top of his head awkwardly, giving the boy a confused look.

"Dipper are you ok?" He asked, sounding more curious than scared or worried.

Dipper grinned, showing large fangs, his glowing yellow eyes lighting up.

Stanley's eyes widened and he took a long step back. He held out his hands, shaking his head.

"What have you done with my nephew" Stan grit his teeth "Bipper".

Judging by his tone, Pacifica guessed it wasn't the first time this had happened.

"Look fez, I'm not gonna hurt you" a smug look settled on the young twins face, unnatural to his usual expression of tiredness, stress and anxiety.

Dipper never looked like that, his face stretched into a grotesque grin, so wide that his gums were showing.

"Then why are you here?"

Bipper raised his eyebrows "I'm looking for someone".

"Who" Stan looked hesitant, like he was ready to sprint back to the shack if anything happened. Pacifica was ready to do the Same.

"Llama" bipper replied and after Stan gave him a confused look, he went on "you know, the blonde kid".

Still, Stan was confused.

Bipper grunted impatiently "the rich one?"

"Ooooh" Stan nodded, understanding.

Pacifica scowled, she hated the fact that people knew her as the fake blonde rich girl who could just whisk all her problems away with a click of her fingers.

"Did you see where she went? I think she was heading towards the shack" bipper said, mostly talking to himself rather than to the old man next to him.

Something clicked in Stans head and he went tense, a worried look on his features "where's Mabel..."

Pacifica stopped breathing, her eyes growing wider. He was right, where was Mabel?

Bipper threw back his head and laughed. Pacifica flinched at the sound. It sounded like dippers laugh but more echoey and... She couldn't really explain but she did know that it was awful.

"Don't worry, shooting stars fine" he shrugged off Stans question, wiping away a tear and chuckling.

"You didn't answer my question, bill"

Pacifica couldn't take it anymore. She was the one he wanted and she didn't want anybody to get hurt. She stepped out of the bush, tense but determined.

"Where's Mabel?" She asked, trying to keep calm.

Bipper spun around, the same ear to ear grin appeared on his face as he met her gaze. Stan stood behind him, ready to catch him if he made a run for it with her.

Bipper held out his had making a 'hand it over' gesture. Pacifica shook her head wildly.

"Come on llama, its only one, I need them all to destroy your damn world" bipper growled.

"And if you get them all you will so I'm not giving it to you" Pacifica stood her ground, glaring at the demon.

"Suit yourself, kid" bipper shrugged innocently, smirking.

Pacifica closed her eyes and braced herself for something to hit her but instead she was met with a strange burning sensation growing up her thighs. She opened her eyes to see blue flames crawling up her legs.

Stan had rushed forward but bipper held him back with some sort of force field. He watched the fire envelope her, yelling at bill to stop but he wasn't listening. Next came another dark magic. Something hit her hard on the back of the head, making her fall to the ground. She was covered in the blue fire now, screaming at the searing pain.

She felt for the journal in her jacket pocket, hoping it would be burned but as she thought, it was fine. She was going to die. Die before she could apologise the to twins for all the jerky things she'd done to them. Especially to Mabel. She hated how easily Mabel forgave her because she knew she didn't deserve it. Pacifica Northwest didn't deserve caring friends like Mabel Pines.

She was about to close her eyes and accept her fate when she heard a third pair of footsteps running towards her at full speed. A loud 'oof' was heard as something large and metal hit Bipper square in the stomach. The fire vanished and Pacifica was now lying in a pile of charred leaves, burnt pretty badly but at least she knew she was going to live.

Mabel Pines stood over her, frantically searching her jacket pockets for something. Pacifica could hear Stan mumbling on his phone and Mabel pulling the journal out of her pocket, opening it up and chanting something before she blacked out.

"Is she gonna be ok?"

"Yeah I'm sure she will be, stop worrying"

"Sorry I can't help it"

"Don't worry sis"

"This is all my fault"

"No its not, its mine" a sad sigh.

"Will you two shut up! You know who's fault it is? Bills. Oh man, what am I going to tell her parents- hey, she's waking up!"

Pacifica Northwest opened her eyes to three figures watching over her. She squinted at the sudden light but smiled anyways, even though it hurt her scorched face.

Whoop whoop done :D I'm hoping to continue this, it was fun to write and I love me some Mabifica ;) I know half the people who follow me expect adventure time but I'm hoping this'll get as popular as my MarcelinexMarshall one :O

(Edited)