Chapter 1: Changes

Authors Note: Hello, This is my first Adventure time fanfic and it's going to be a Finnceline type of story. This is a story of adventure and romances, which at times might seem too serious for Adventure time but there will also be lighthearted silly fun along with heated in your feelings romance. Hope you enjoy.

From off in the distance behind the ice kingdom and past the endless isles and oceans the sun rose over the horizon in the land of Ooo. The first rays of daylight flashed through the window of an elaborate tree house causing a 14-year-old Finn to awaken. Finn rolled over onto his back and wondered what adventures he would get himself into on this fine day. Jake was away on an epic honeymoon of love and romance across Ooo and the various dimensions with Lady Rainicorn and was not due back for at least another month. Finn had the tree house all to himself. Finally after some deep thoughts and contemplation mixed with some periods of blank. Finn decided to go downstairs and make some breakfast.

Finn dressed in his usual blue shorts, blue shirt, and signature white bear hat as he front flipped down the hatch and landed downstairs. Feeling lazy Finn just grabbed a bowl of cereal and filled it up with milk and some fruits. As he sat there munching and crunching he found himself reminiscing about various things. Flame Princess, the pasts couple months, his father, and various other things. Finn had mostly gotten over Flame Princess as upon deeper reflection he realized they wouldn't have worked out in the end. But he still couldn't deny the times they had would always be some of the happiest times. His father was still nowhere to be found as Finn recalled him ditching a broken Finn at the Citadel. Finn looked over his flower arm having to just pound the glob out of evil one handed or use Ice ninja powers after borrowing the book from Ice King. Finn looked over his arm and suddenly it dawned on him as if it was the simplest answer, he'll go find another new sword!

Finn thought about where to go to find a new weapon, Choose Goose? A dungeon? Or maybe the endless train of loot? Finn shook his head, as he realized he needed a truly epic weapon. Sighing, Finn wished Billy was still around as he knew the legends and secrets of Ooo through years of adventuring and fighting evil. Suddenly Finn realized he could talk to the next best thing, Canyon. With that idea in mind Finn ran and grabbed his bag, ran out the door and begin to make his way toward the lake in which Canyon resided under.

When Finn arrived at the lake he threw a rock in and soon the lake parted and out came the towering azure blue figure that was Canyon.

Canyon: "Oh hey Finn what's up?

Finn: " What's up Canyon! I was wondering if you wanted to come with me on a quest… Of redemption." Said Finn with a dramatic pause in between

Canyon: "Hmm sounds interesting, Where we heading to?

Finn: "Well I was wondering maybe you would have an idea, I lost my grass sword and my arm." Said Finn as he waved his flower stub, "I need a sword that's beyond epic, yo."

Canyon: "Hmm there's legends of a sword like that, but Billy and I could never seem to find the time to check up on it, it's past the Ice Kingdom in this cave under the ocean.

Finn: "sounds math, you wanna head there now?"

Canyon: "I don't see why not." Said Canyon with a smile as she went back in the lake and rode out in Billy's motorcycle.

Finn: "You fixed it!"

Canyon: "I had some help, hop on." Said Canyon with a smile.

The two adventures began to ride out towards the Ice Kingdom, past the penguins, and straight to the edge where the ice met the waters. Once they arrived the two hopped off the bike and Canyon put her palm over Finn's mouth creating a bubble around this face.

Canyon: "it'll help you breathe underwater."

Finn couldn't speak but gave a thumbs up as he ran to the edge and dived straight into the ocean with Canyon following close behind. The two swam for a good while before they saw a cave nestled between two underwater cliffs. Finn pointed at the cave receiving a nod from Canyon. Soon they reached the cave and climbed out of the water onto the dry land.

Finn: "Glob! All my stuff is wet." Grumbled Finn as he attempted to dry his hat and bag.

Canyon: "Oh don't worry, I can help you with that." Said Canyon with as she made pulling motion as all the water evaporated from Finn and fell back into the body of water behind them.

Finn: "Math! Thanks canyon!"

Canyon: "No biggie, now lets see where that sword's hiding." As she pointed towards a set of demon doors with two menacing stone gargoyles crouched on each side.

The two adventurers approached the door and pushed past it when suddenly they heard rumbling as the two stone gargoyles came to life and begin to head inside after them. With a laugh both Finn and Canyon began to run down through the cave slicing and punching their way past skeletons and demons with the gargoyles panting and trying to keep up with them. Once they pushed through another set of doors, Canyon turned around and with her giant sword sliced the two gargoyles in half.

Finn: "haha, that was awesome!"

Canyon: "Man, I haven't had a battle like that in ages!" said and elated Canyon who was laughing along with Finn.

After settling down the two adventurers looked ahead and saw that the room was designed like the inside of an old Victorian church with everything inside onyx black and a giant glass mural on the ceiling. In the middle there was a solid black throne that seemed to be made out of black diamonds. Lodged on the seat was a sleek solid black sword with the handle wrapped in red leather. Finn walked up to the sword and upon closer inspection saw that there seemed to be a grayish flowing energy moving around the sword. Finn noticed a gold plaque underneath him.

Inscribed on the plaque was a message:

"Herein lies the sword of dreams, to the brave adventurer who takes this blade be warned. Beware duality and the curse in which you will forever be burdened with upon the release of this blade."

Canyon: "That's got to be one of the most amazing swords that I have ever seen." Said Canyon in awe.

Finn: " It's pretty math, but is it worth it?" said Finn pointing at the plaque for Canyon to read.

Canyon: "That's for you to decide Finn, we could always look somewhere else, there's a bunch of legendary weapons and armor around Ooo."

Finn sat down and contemplated; as he looked at the magnificent blade before him it resembled his demon blade except instead of a circle at the hilt there was a triangle.

Finn: " I don't think I should risk…"

Before Finn could finish his sentence there was a crash as the mural above shattered and shadowy wisps began to fly out forming into dark knights who began to charge at Finn and Canyon. Canyon charged towards the knights as she swung her sword at the knights only to have it pass right through them. Finn tried to punch one of the approaching knights but the results were the same. The knights swung at both Finn and Canyon, which they dodged, but the sword grazed canyon slicing the bottom of her dress.

Canyon: "Well this is a problem."

Finn: "Dang it, we can't hit them but they can hit us? Mad advantage."

The two tried to look for a way out of the situation but found that they were basically surrounded as the room was filling up with these dark knights.

"Maybe the sword…."

Without hesitation Finn turned around and pulled the sword out of the throne, instantly a white light beamed down onto Finn and flashed through the room. Canyon had to cover her eyes but when she opened them again everything was still and silent.

Canyon: "You did it Finn! They're gone! Finn?"

Canyon looked over and saw that the boy was unconscious holding the sword with his other arm? Amazingly it seemed to have grown back and that wasn't all. Finn's hat seemed to have disappeared as all Canyon could see was a gold along with the fact that his clothes had shrank, or did he grow? Canyon was extremely concerned as she picked up Finn and began to head towards the Candy Kingdom. Maybe the Princess would have some answers.

It was nighttime in Ooo as the pale moonlight could be seen shining into another dark cave as wolves could be heard howling in the distance. Inside the cave there was a house and inside the house two red eyes opened as the girl smiled and began to howl back at the wolves. After awhile she gave a melodic laugh as she floated downstairs and grabbed an apple sucking the red out of it. With a yawn she absentmindedly floated towards he living room and grabbed her Axe Bass.

With a smile she laid back in the air, her messy long black her barely scraping the ground as she began to play.

(I'm just you're problem melody)

La de da da da

Why do I bury this inside?

La de da da da

I'm gonna drown myself in sound

Suddenly the phone rang interrupting her personal Jam session causing her to make an annoyed face as she floated over to her phone.

"What." She said with annoyance clearly ringing in her voice

"Marceline, something's happened to Finn…" said the voice on the other phone

"Hello? Marceline? Hello?"

The phone was left hanging off the table and door could be seen open as a shadowy bat could be seen soaring out of the cave and into the night.

Authors note: And so ends chapter one, let me know what you guys think!