Hey people of FIMFiction. My name's Finn and I've been in Equestria with my pal, Jake, for over five years. I got married to Twilight and we've had a filly named Fionna. Yep, life's great in Equestria! But everything's about to change for the worst...
TheLightning presents Adventure Time: A New Adventure
Prologue: A few years later...
---Ponyville: Twilight's Castle---
"It's an Universe Transmorphigrater" Princess Bubblegum's voice echoed.
Finn ran over to it and said "Cool!" before pressing the button. Finn and Jake dissipated from the room. But in the background was a cat the size of Jake.
"Daddy!" A filly bounced on top of Finn and Twilight's bed.
"What?" Finn groaned while opening his eyes.
"It's Fionna's first day at school, dear" An Alicorn said walking up next to Finn.
Finn jolted up out of his bed and landed in front of the Alicorn he know too well.
"Morning, Sleepyhead" Twilight said smooching Finn.
"Daddy's awake!" The filly said bouncing around Finn and Twilight.
"Calm down, Fionna" A dog said picking up Fionna and putting her on his back.
"Morning, Jake" Finn said walking over to Jake and brohoofing him.
"Morning, Bro" Jake said before turning around and walking out of the bedroom.
"Have a good day at school, Fionna" Twilight said before kissing Fionna on her forehead.
"Bye, Mommy!" Fionna said waving goodbye as her, Jake, and Finn walked towards her school (A.K.A. Ponyville's only school).
They arrived at Fionna's School and Fionna jumped off of Jake's back.
"Have a good day, kiddo" Finn said ruffling her mane.
"What he said" Jake said patting Fionna on her head.
"Bye Dad! Bye Mister Jake!" Fionna said hugging both of them before running into the School.
"They grow up so fast" Jake said before wiping a tear off his face.
Finn chuckled at this before they walked away from the School.
"I gotta say, Jake. Our life's been pretty awesome since we came here" Finn said to Jake while carrying groceries in his bag.
"It sure has dude, it sure has" Jake said sighing happily.
Finn and Jake walked up to Applejack's stand.
"Howdy, Finn and Jake!" The familiar mare said behind the counter.
"Hey, Applejack" Finn said placing five bits on the counter. "Ten apples, please" Finn said.
"Coming right up, Pard'ner" Applejack said grabbing a basket with ten apples in it. "Thanks for the business, gents" She said taking the bits that Finn put down.
"Urf welfcume Afflejack" Finn said with the basket hinge in his mouth.
"Later, Applejack" Jake said walking away with Finn.
Finn opened the door to Sugarcube Corner with the bell above the door doing a familiar *Ring!* as he open the door.
"Hey, Finn and Jake!" Pinkie said standing behind the counter.
"The usual, Pinkie" Finn said walking up to the counter and placing two bits on it.
"Coming right up!" Pinkie said bouncing into the kitchen.
Finn and Jake sat at a booth eating their usual order of donuts.
"...And Pinkie just jumped up and said "Why not both?"" Jake said munching his doughnut.
"That's Pinkie for ya" Finn said munching on his doughnut as well.
Jake looked outside at the sun, then looked back at Finn. "I think Fionna's day is over" Jake said before getting up.
"...And we learned about Cutie Marks and..." Fionna chatted to Finn and Jake all the way back to the Castle.
Finn opened the doors to see Twilight talking to... Celestia?
"Celestia? What are you doing here?" Finn said walking over to them.
Twilight looked at Finn then at Celestia and Celestia nodded.
Twilight looked back at Finn. "I found another person from your world" Twilight said.
"Really?" Jake said putting Fionna down and walking up next to Finn.
"Yes. And she says she knows Jake" Twilight said turning around to look at this female who said she knew Jake.
"Hey, Jake" The female said.
"C-cake?" Jake said surprised.
"Who?" Finn said confused.
Jake sighed before turning to look at Finn. "I was gonna tell you about her. But we were sent here before I was gonna tell you" Jake said.
"But I thought you hated cats" Finn said, even more confused.
"Not her. She's different" Jake said turning to look at Cake.
"She's like me. She's a magical cat" Jake said turning back to Finn.
"Yep, he's right" Cake said stretching over to them.
"This is so confusing. Why didn't you tell me earlier?" Finn said looking at Cake, then at Jake.
"To be truthful. I was too embarrassed to tell you because you knew I hated cats" Jake said looking at the floor.
"I don't blame you, dude. If I was you, I would be embarrassed too" Finn said patting Jake on the head.
"Thanks, dude" Jake said before turning back to Cake.
"How did you get here anyways?" Jake said.
"Well, I saw you two get 'Teleported' here and I was worried. So when Bubblegum was distracted I pressed the button and was teleported here" Cake explained.
"But we've been here for a few years. Why did come here after that long?" Jake asked as confused as Finn was.
"I don't know" Cake said shrugging.
"I think that your time differs from our time" Celestia said.
"I guess that makes sense" Finn said scratching the back of his head.
Fionna stared at them talking and her eyes changed from blue to red for a second.
She stared at them angrily after that.
Something bad is gonna happen soon...
END OF PROLOGUE