Long ago, one race ruled over Earth:

The HUMANS

One day, war broke out.

The MUSHROOM WAR.

After many years, an unspeakable EVIL arose and plagued the world.

The EVIL was sealed by a great warrior of legend, known as BILLY.

It was then that the land of OOO emerged and magic soon followed.

Leaving the land in peace.

However...

This world was but a fragment of other WORLDS.

In another, HUMANS and MONSTERS fought.

The HUMANS won, and sealed the MONSTERS with their own magic.

Two other WORLDS.

Destined to stay apart, as long as they existed.

Unless...

FATE made a decision.


"PAR... TAY!"

Up in the clouds of the Cloud Kingdom, a party was held for its' inhabitants, and those being fluffy cloud people. Everyone was having a great time listening to funky techno music, snacks & punch, and dancing as hard as possible.

Among those present, were two of the most well known heros in all the land of Ooo:

Finn the Human & Jake the (Magic) Dog.

"Yo Jake!" Finn exclaimed while wiggling his arms and legs to the music. "This party is off the charts!"

"Haha!" Jake laughed while stretching his limbs all around while enjoying the music. "I know man! Hey thanks for inviting us over again Party God!"

"AWOOH~!" A giant floating wolf head with a cap howled before smiling a toothy grin. "How could I forget about my favorite party animal?! You're welcome to party here anytime you want!"

"Thank you Party God!" Finn happily exclaimed before preparing a back flip. "Back flippin' time!"

"Do it Finn!" Jake yelled, excited for his bros' epic back flip.

"Yeup!"

*EPIC BACKFLIP ACHIEVMENT!

"Yeah-, what?!" Turning after the move was finished, Finn spotted a cloud person holding up a sign that said 'EPIC BACKFLIP ACHIEVMENT'. "Oh yeah, achievement unlocked!"

Stretching over, Jake snuck in a high five with his human buddy while he wasn't looking. "Awesome dude!"

"AWOOH~!" Party God howled once more while flying over to the human boy. "Finn that was so flipping amazing! That was the most epic back flip I've ever seen!"

Finn laughed before putting his hands behind his back. "It was no biggy; just having a real fun time!"

"Finn!" Taking one deep breath, Party God narrowed his eyes at the human. "For being a great person to party with and being bros with the party dog Jake, I've decided to grant you one wish!"

"A wish?!" Jake gasped while his head stretched over Finns' side with widened eyes. "You mean he gets one too?!"

"Yes, yes!" The Party God exclaimed with another toothy grin. "Whatever the boy desires within reason, I will grant! AWOOH~!"

"Oh Glob! This is amazing!" Finn's eyes sparkled with excitement at the prospect of getting an actual 'wish' this time around. Unlike the incident with the Lich where it was a do-or-die situation at the time.

"Oh man, I know what wish you're gonna want... hehe..." Jake grinned before he shaped his hand into a familiar 'elemental'. "You're gonna wish to be immune to fire so you can get all lovey-dovey with Flame Princess!"

"Wha-?!" Finn's face blushed a bright red at the mention of his current 'girlfriend', but soon pushed the thought aside with a hurl. "Eww, gross! That's not what I'd wish for!"

"Yeah, you're probably right!" Jake said with a small laugh. "I was just messing with yah, but still... what would you wish for?"

"To be honest, I don't really know," Finn answered before putting a hand on his chin. "There's nothing that I really need aside from kicking evils' butt. Guess you don't need a lot whenever you're an adventurer, huh?"

"I hear yah man!" Jake put his stretchy arms around his buds' waist while smiling. "Who needs some wish when you got all the adventures you could ever want!"

"I thought you were excited about me getting a wish?" Finn asked with a raised eyebrow.

"I'm good either way!" Jake replied with a shrug. "After all, it's your decision buddy!"

"Hmm..." Finn put his young mind together while rubbing his forehead before something clicked. "Say Jake... about having all the adventures we could ever want... is that always true?"

Jake simply shrugged before answering. "I mean yeah! We get to fight all kinds of evil. Demons, ghosts, cursed video games, the Ice King, and all sorts of things. It's always Adventure Time with the both of us around in the land of Ooo! What could be better?"

"Well, hear me out Jake..." Kneeling down to a huddle, Finn decided to lay out a crazy idea. "What if... I wished for an adventure of the likes no one has ever seen!"

"Woah!" Finn's idea was getting him excited and curious at the same time. "You mean like a super, ultra, mega, awesome, fun time kinda adventure?"

"Heck yeah!" Finn answered before continuing with a goofy grin. "What if there was an adventure that tested our very limits, and would be one of the best adventures we've ever ventured on in our entire lives!"

"Oh. My. Glob. Dude!" Jake exploded with great laughter of joy at the idea of a great adventure. "That's the greatest wish I've ever heard in my life man! Imagine, the greatest adventure of all time! One more grand then all our previous adventures combined... but like... times a bajillion!"

"You got me so pumped!" Finn happily exclaimed before his bud started shaking him.

"Then do it man! You and I are pros... and bros!"

"YEAH! PARTY GOD!"

"Woof?" Party God blinked out of his brief nap in the time the two moral beings were talking. "So what is your wish, Finn the human boy?"

Taking a deep breath, Finn makes the one wish that would change the FATE of two worlds forever. "I wish... for the greatest adventure in the universe... no... BEYOND THE UNIVERSE!"

Party God gasped before his eyes turned a hollow black, and caused both Finn and Jake to reel back in brief horror.

"Uhh... Finn?" Jake asked with a worried expression. "Do you think we maybe... broke Party God?"

"I don't know man!" Finn panicked with his hands on his white bear hat. "Maybe we-!"

*BLAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAST!

"Holy molly that's a big laser!" Jake exclaimed while he stretched his body into a net. Taking Finn with him under his fur, both of the heroes moved out the way of the bright, rainbow colored laser that was fired right where they stood.


The laser continued its' course and fired past Finn & Jakes' tree house.

"Okay Lorraine," a tiny sentient game console said with his hands behind his back. "Time to confess."

"*Bock?" A chicken with its' beaks smothered with lipstick clucked without a care in the world.

Turning, the robot flicked a tiny flashlight into the chickens' eyes. "Who stole the cheese?!"

*BLAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAST!

"Yikes!" Both the tiny robot and the chicken ducked in fear at the sound the laser made. "What in globs name?"


Going further past the Candy Kingdom.

"Add in the sub-atomic particle to this mixture... and...!" The candy princess, Princess Bubblegum, said while performing a delicate, scientific process in her lab with the final step moments within its' final stages. "Eureka!" Being glad the glass vase didn't explode in her face, the princess held up one of her greatest concoctions yet. "I have finally perfect the formula off-!"

*BLAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAST!"

"EVIL PRESENCE DETECTED!"

"WHAT THE CABBAGE?!" Due to the sound of the laser and current shock wave from one of her alerted Gumball Guardians' footsteps, the scientist fell over while the sound of glass shattering soon followed. "Ugh... oh no! No, no, no, no, glob no-!"

Along with the lab and herself being quickly enveloped in a massive ball of Spaghetti.


Reaching even further past the Ice Kingdom.

"Okay Gunter, just like with rehearsed!" The wizard of ice, the Ice King himself, briefly coughed into his hands before reading the script that he wrote. A small penguin wearing a paper made bunny hat with deformed bunny ears held a script with its' tiny flippers before the Ice King began.

"Oh Fiona! Time and time again, have I saved you from all those dreadful 'husbandos'! Don't you see that it is I, the Ice King, that is the one truly fit to marry you?!"

"Quack," Gunter plainly replied causing the Ice King to scream out in frustration.

"No Gunter! You have to put more passion into that line! You got to be like, 'oh yes~, I so lovely do! You big ole' lover boy! May we marry and have a bunch of children and get fat'!" Taking a breath, Ice King pointed at the penguin in disappointment. "See, that's how you deliver your lines! Now let's go again! We ain't stopping till' we get this-!"

*BLAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAST!

"... right?" Ice King blinked before suddenly some white sticky snow dropped onto his crown. Looking up, the king of ice noticed that the entire roof of his castle had been blown away by some mysterious force. "Huh, my roofs' been blown off..."

"Quack?" Gunter took off its' hat while looking up with a serious expression. Something was going on, and the penguin didn't like where it was going...


The rainbow colored laser blast forth throughout all the land of Ooo, before a nearby mountain was in sight of its' current course and soon to be ready for impact. Colliding with the mountain with extreme force, the mountain exploded in a mixture of fire and sparkles... before an unknown force reversed almost all the damage it had caused.

All except for one open hole that embedded itself within a small cave... with a very long fall awaiting those who wished to venture its' depths...


[ UNDERTIME ]

[ PROLOUGE: THE JOURNEY BEGINS ]


"Finn, you okay buddy?"

"What...?" Opening his eyes, he saw Jake holding him before seeing that Party God had passed out. "Party God!" Running ahead of Jake, he checked to make sure the party wolf deity was still living, which would be ironic since he's technically a 'GOD', but as a hero he just couldn't ignore someone that might be hurt. No matter who they were.

"He okay?" Jake asked walking over before the Party God arose giving a big yawn in response. "Guess that's a yes then?"

"You good Party God?" Finn asked as Party God nodded before howling.

"Wish granted, Finn the Human. If you seek a true ADVENTURE, you must seek the MOUNTAINS."

"The... mountains?" Finn asked while blinking in confusion as there were many mountains around the land of Ooo.

"What kind of mountain?" Jake asked with a raised eyebrow before Party God continued.

"It's not just ANY mountain... it's the mountain of ALL mountains! One influenced by a large flux of magical energy, and seeming with a grand adventure that you so wish to seek!"

"Woah, that sounds so radical!" Finn was already getting excited about his wish. "So where do I seek this magical mountain of ALL mountains, oh Party God!"

"Yeah man, lay it on us!" Jake exclaimed while pumping a fist into his hands. "We're ready!"

Growling for a brief moment, Party God answered with narrowed eyes. "Through the Candy Kingdom, and past the Ice Kingdom, lays miles of terrain that will eventually lead you to the mountain of legend. There, in which you seek, will be your grand ADVENTURE! AWOOH~!"

Flying off into the atmosphere, Finn & Jake were left in awe while still among the citizens of the Cloud Kingdom... and for whichever reason were unaware of what transpired and were still dancing.

"Jake..." Finn looked at his bro with a big grin. "Y'know what time it is?"

"Do you even got to say it?" Grinning along with him, Jake the Dog readied his right hand, knowing EXACTLY what time it was.

"Oh you know it!" Both him and Jake jumped high into the air before a fist-bump ensued with both of the adventurers yelling out:

"ADVENTURE TIME!"


Meanwhile, with the tiny, sentient video game console who was named BMO...

"Is it safe?"

"*Cluck!"

"*Sigh..." Shuffling out from under the chicken who was named Lorraine, BMO looked around before angrily pointing at the flightless bird. "This doesn't change anything... Lorraine!" The chicken remained silent before the tiny robot decided to head back inside the tree house. "This isn't over. Not by a long shot..."

Entering the kitchen, BMO was met with his companions Finn & Jake out of nowhere!

"Ah, Finn... Jake... I...!" BMO began nervously with his eyes going back and forth. Just when did they get home without BMO noticing?

"Hey BMO!" Jake was busy wrapping up a large pile of food into a tortilla that he almost didn't notice the tiny robot if it hadn't been for hearing its' nervous voice. "Me and Finn are just packing up supplies for our grand adventure!"

"Yeah, it's gonna be so epic!" Finn, meanwhile, was packing up a bunch of items meant for combat. Ones such as his Demon Blood sword, a few bottles of magical healing tears, and his... flute?

"Your flute?" Jake asked while wrapping up his food into one big burrito. "I thought it broke from that time you tried to spear the Ice King."

"It did, but I had PB fix it, so it plays better then ever," Finn answered before playing a short flute solo. "Never know when it might come in handy!"

"Yeah man, just like this!" Jake soon held up his massive creation that was about twice the size of Finn. "EVERYTHING BURRITO... 2.0!"

"Haha, nice!" Everything was all coming together for the adventure of ALL adventures! He could only make guesses at what sorts of dungeons that mountain contained. Giant monsters? Trap doors? Secret lairs? Rooms filled to the brim with TREASURE CHESTS?! "Man Jake, I just can't stop thinking about this adventure!"

"Adventure?" BMO mouthed while blinking. So it seemed they were going to be gone for another while, leaving the tiny game console alone once more. While he still had his fun being 'BMO Noire', it was starting to become a little stale. He needed a real adventure. Sure, there was that one time where the robot got lost with a sentient bubble, but was there ever a time in which he tagged along?

"Something up BMO?"

BMO blinked at having realized he was staring at his friends with a longing expression, but... no. BMO didn't want to be left behind this time. Something inside the tiny robot yearned for adventure, and nothing like his little made up drama stories.

BMO wanted a real adventure.

"I want adventure!" BMO yelled while wiggling his little arms.

"Okay," both Finn & Jake replied with simple smiles.

"Huh?" Blinking with widened eyes, he stared at both of his friends in bewilderment. "Wait, I can come too?"

"Yeah BMO," Finn answered with a smile while picking up the tiny game console. "All you needed to do was ask."

"I..." Were they serious? All this time BMO could have adventured with them? He just needed to... ask?

"This is probably going to be the biggest adventure there ever is!" Jake happily exclaimed while tucking the burrito in a massive body sack he formed unto his back. "Of course you can come!"

"I...!" Digital tears were starting to form on his face-screen causing both Finn & Jake to panic.

"BMO, what's wrong?" Finn asked with worry.

"Don't cry!" Jake said with a frown. "It's okay if you don't want to-!"

"No!" BMO said with a sad smile before hugging the both of them. "I'm... just so happy!"

Both of the heroes awed at the little game console before giving him a big hug. They were family after all, so what would the harm be in having him tag along?

"There, you feeling better now BMO?" Jake asked with a smile before BMO nodded.

"Oh yes! BMO is very excited about big adventure!" Jumping up and down, BMO was ready to come along on the grand adventure.

"Come here little guy!" Finn spoke before he picked up BMO and stuffed him inside his backpack. "How's that?"

"Good to go!" BMO exclaimed from inside the bag, though it was muffled on the outside.

"I think that's a yes!" Jake said before he made his way towards the ladder that would lead them down to their front door. "You about ready there Finn?"

"You know it man, let's-!"

*RING, RING!

"Oh hold up, my phones' ringing."

"What?!" Jake yelled in mock anger before puffing out his cheeks. "Who callin' you at this time yo?! We has got some adventuring to do!"

"It's... PB?" Finn answered while blinking before answering their 'phone' which was an old modified hand-held radio with a couple of kitten stickers and the word 'SHMOW' engraved on top. A pixelated picture of Princess Bubblegum was shown that signified that is was indeed PB who was calling.

"Bubblegum?" Jake mouthed with a raised eyebrow. "You still call your ex-love interest?"

"Well duh, we're still friends y'know," Finn answered before he answered his phone. "PB?"

"Finn! Report to the Candy Kingdom, now." Her voice said with a stern tone before it flat lined, signifying that she immediately hung up after her orders were given.

"Eesh, what's got her blowing a big bubble?" Jake said before snickering causing Finn to groan at his bros' bad pun.

"Anyways, we still got to check it out!" Jumping ahead, Finn quickly descended the ladder. "Come on Jake, they might be in trouble!"

"Ah okay, guess one stop at the Candy Kingdom won't hurt before our big adventure!" Following his companion with a simple stretch down the ladder, Jake wondered what the PB was up to this time.


"WHAT HAVE YOU DONE?!"

What Jake didn't expect upon arrival to the Candy Kingdom was the princess screaming into their direction the moment they entered her lab.

"Woah, woah, woah!" Jake had to put his paw down on this one, because they only just got here! "Is that anyway you should be greeting us?!"

"It's okay Jake, PB is probably just under a lot of stress over her lab work, right Peebs?" Finn asked while doing his best to calm the situation down between both of their friends, but Bubblegum wasn't having it.

"I HAD THE PERFECT FORMULA FOR INSTANT SPAGETTI!" Scratching her long bubblegum hair, Princess Bonnibel Bubblegum was frustrated beyond comprehension. Just think, she had perfected the formula that could have ended world hunger, but in the end due to unforeseen actions all the pasta and red sauce blew up in her face.

It took herself and some Banana Guards over an entire hour to clean and store up all the spaghetti that had exploded in her lab.

"If you just wanted some spaghetti we could have brought you some," Jake said with a shrug.

The princess groaned before she gave Jake a stern look. "Thanks, but I think I have enough of that to last for about a month or so. However!" Now pointing at Finn, the princesses' expression went back to anger. "That doesn't excuse whatever wish Finn made with the Party God!"

"How'd you know about that PB?!" Finn asked with a nervous expression at how in the entire land of Ooo the princess knew about his wish at Cloud Kingdom.

"Oh, because of this." Taking out a small remote before pressing a single button, a small, pink drone flew from outside the window and into the lab before landing in her open palm. The drone itself appeared to resemble the shape of one of the Gumball Guardians heads, but without any glass containing any gumballs. "Meet, GUMBALL-001. A drone that I designed to keep an eye on you two."

"You were spying on us?!" Jake exclaimed in surprise and a small bit of anger.

"What gives Peebs?" Finn asked with a frown.

"After that incident where you were captured by Ricardio, I decided to build this drone to follow you in case something like that ever happened to you two again," the princess explained before continuing. "It only alerts me of danger whenever you guys are unconscious or something else prevents the drone from following you. However, if one of the kingdoms' Gumball Guardians is alerted to evil presences, then it would send a distress signal for the both of you to immediately come to the Candy Kingdom."

"Wait, if we were supposed to get some distress signal or whatever, then how come we didn't?" Jake asked with a raised eyebrow before the princess sighed.

"That's because whatever wish Finn made had caused the Party God to negate all other sounds whenever its' magic fired all throughout the land of Ooo, and I know this because I looked back at the footage it recorded. But, regrettably, this design can not pick up any audio in any of the footage it records."

Jake simply nodded at the princesses' explanation. "Okay, that makes sense... but that doesn't excuse the fact you were spying on us!"

"Yeah PB, do you not trust us as heroes or something?" Finn asked with a smile before looking off into the distance with a nervous expression. "I mean, yeah, we did get captured... but we were just caught off guard! That's all! Haha!"

"Finn," Bonnibel began before putting a hand on the humans' shoulder. "You must remember that I care about you. ALL of Ooo cares about you. If something were to happen to either of you, we'd all be doomed."

"And I get that Peebs, but... you don't need to be so overprotective about us," Finn spoke with honesty towards the royalty of the Candy Kingdom and not as some old crush he used to have. "Spying on us just messes with our jam, and we can't have PB & J without our jam, right Jake?"

"Exactly!" Jake happily exclaimed before looking toward the princess. "Look princess, I'm sorry for getting all cranky and all that other junk, but you gotta let us do our thing! We're radical bros, through and through till' the very end!"

"Haha, radical man!" Running up and high-fiving Jake, Finn would always have his bros' back! Even if some evil heart guy born from the Ice Kings' evil desires got them funked up once, he'd never get them twice!

"You guys..." She really was starting to get a bit selfish for them. Despite everything, even with Finns' current relationship with the Flame Princess, those two would still be this lands' true heroes. "You're right... I guess I should have no reason to interfere with your heroic deeds."

*CRUNCH!

"Huh?" Both Finn & Jake sounded off before noticing that the princess had crushed her little drone into tiny pieces with just her bare hands.

"But I have to ask, Finn..." The princesses eyes were soon becoming covered by a looming dark shadow, with her smile only growing. "What was the wish you made with the Party God?"

"Oh that?" Finn said while blinking. "I just wished for the greatest adventure beyond the entire universe-MMPH!"

"FINN!" Jake yelled in noticeable panic but it was all too late. "Oh no..."

"Beyond... the universe... you say..." Princesses Bubblegum mouthed before her fists shook in annoyance at what that single wish could have done to the land of Ooo. "That kind of wish... along with the guardians' warning... do you know what that entails Finn?"

Taking Jakes' hand off his mouth, Finn himself started to get nervous at the way the princesses looked right now. "Uhm... super powerful monsters where me and Jake get to kick their butts?"

In the next instance Princesses Bonnibel Bubblegum, ruler of the Candy Kingdom, started to giggle before it slowly evolved into maniacal laughter. The two adventurers soon started nervously giggling as the princesses approached them... before their screams could be heard all throughout the Candy Kingdom.


"Man this sucks...," Jake said while on all fours in his giant dog form as he and Finn (riding on top) trekked through the wilderness in search of the old mountain that would lead them to their 'grand adventure'. Though it wouldn't be without its' share of sacrifices. "Do we really have to wear these pendants Finn?"

"Yeah man, and even if we wanted to take these off, Peebs put some of her science junk into these so that we couldn't take them off," Finn explained while holding up the pink jewel where PB could contact them from anywhere, anytime. "Guess she got tired of me always throwing them off into the distance and all that."

"But I thought all that stuff we said about not spying on us would avoid this?!" Jake annoyingly said while trying to bite off his jewel. "This is... like... some stupid collar or something, and I don't like it!"

"Come on Jake, it ain't so bad!" Finn tried to look at the bright side of things, but in the end it seemed that the princesses' worries would continue due to his wish for an awesome adventure. "She can't spy on us with these, so we're super good!"

"Super good!" BMO happily exclaimed while appearing from Finns' backpack before settling back down into it.

Finn laughed before giving his dog friend a goofy smile. "See Jake, BMO thinks it's super good!"

Jake grumbled for a moment before sighing in defeat. "Alright, alright... wait." Sniffing the air from left to right, the magic dog gasped with widened eyes. "YO!"

"What is it Jake?!" Finn asked with widened eyes. "You found somethin"?"

"Yeah, yeah!" Sniffing again, there was no other doubt in his mind. "I think I our adventure's this way! I can just smell it waiting for us!"

"Then why wait man?!" Finn happily exclaimed before pointing forward. "Faster Jake!"

"On it!" Increasing his speed, Jake ran for about a minute or so before he stopped after having passed a sign. "Woah man, hold up!" Reversing his steps in an almost comedic fashion as if a video was set to rewind, Jake stopped and looked below seeing a large sign on a wooden post. "Weird sign!"

"What? Hyup!" Jumping down to the forest below, Finn walked up to the large sign and inspected it closely.

"What's it say Finn?" The giant dog asked from above the tree's.

Coughing into his hand, Finn started to read. "Here lies MT. EBOTT from times past, legends say that those who climb this mountain never return from it's dark grasp."

"Sounds like something Choose Goose would say," Jake replied with a smile. "He's always speaking in rhymes."

"I know right," Finn said with a small laugh before looking ahead with widened eyes. "Yo Jake, come down here!"

"Alright!" Shrinking down to normal size in an instant, Jake stood by his side before gasping at what he saw ahead. "No way, a cave!"

"You know what that means..." Finn grinned before he and Jake ran ahead and yelled out-

"DUNGEONS!"

Laughing along the way as they entered the cave, it didn't take them long before Jake stopped over a ledge. It didn't stop Finn however...

"Woohoo!"

"Woah!" Stretching his limbs, Jake caught Finn before he could fall into the big hole his friend would have taken. Down below to a potentially cruel death. "Slow down there pardner'!"

"Sorry, just kinda got a little excited," Finn apologized before noticing the huge hole that was inside this cave. Along the cave were vines that grew which formed a trail, leading themselves inside the gigantic hole. "That's a big hole."

"Yeah, and a big drop too," Jake replied before he put on a mockery of a old ladies' voice. "Sunny, don't you go falling down random holes. That ain't how I raised yah!"

Finn groaned while Jake laughed as he looked down. "So, you think this is the entrance to whatever big adventure we'll be going on?"

"Pfft, if that ain't a hole entrance to any dungeon that I have ever heard of, then call me a monkeys' uncle!" Jake joked before Finn laughed.

"I thought I was an uncle."

"Oh yeah, hehe." Jake had almost forgotten that he had kids who grew up faster than him due to their mother being Lady Rainicorn, and who happened to be his wife. "Well, what do you think Finn? Is this where our cosmic adventure will begin?"

"I think you're absolutely right man," Finn answered with a smile before jumping off the ledge back down. "Race you there!"

"Not if I can get there first," Jake yelled before canon-balling over the ledge, with both adventurers now falling down into whatever awaits them down below.

"OHHHH YEAAAH!"

"I'M A FLYING DOG!"

"Finn, Ja- WE'RE FALLING?! AHHHHH!"

Finn, Jake, and BMO were screaming for different reasons as they fell through the cavern until the magic dog grabbed on to the boy. His body soon stretched into a parachute that stopped their fast descent and let them slowly land onto a pile of golden flowers.

"Haha, that was fun!" Finn happily exclaimed while Jake stretched back to normal. "Oh cool, flowers."

"Man, do they expect anyone to survive if all they have is a bed of flowers to break their fall?" Jake questioned as he shivered at the thought if Finn was the one to fall by himself... but he quickly put it aside to the back of his mind.

"Flowers?" BMO said while popping out of Finns' bag once more. "Can I see?"

"Sure BMO," Finn answered while taking the tiny robot out of his bag and setting its' feet on the bed of flowers.

"So pretty..." BMO went ahead and plucked one of the flowers before giving it a small sniff, which should have been impossible give the robot didn't have a nose. "I like thiiIiiIieIei-!"

"What the glob, BMO?!" Finn looked down to find the robots' face-screen was glitching out while it made weird sounds.

"Did those flowers do something to BMO?!" Jake angrily yelled as he stretched his hand into a giant fist and was right about to smash them before BMOs' screen immediately went back to normal. "Uh... BMO?"

"Yes Jake?" BMO turned and asked as if nothing had ever happened.

"Well, your face kinda buzzed out for a moment after you sniffed one of those flowers," Finn said with worry. "Are you sure you're okay?"

"Why, yes!" BMO happily answered as it did a little dance in demonstration. "I am the BMO~, and you are the friends~! I am the BMO, BMO, BMO, BMO~!"

Both Finn and Jake blinked after witnessing the robots' cute dance, but in the end simply shrugged.

"Okay BMO, back in the bag you go," Finn said as he picked up the laughing little robot before stuffing back into his backpack. "So, what now Jake?"

"Hmm, let me see something real fast," Jake said as he quickly stretched his body up into the air until his head poked out of the hole they had just fallen through. "Yup." Stretching back down until his body was down and back to normal, Jake give the human boy a thumbs up. "We can still go back if we get tired or something."

"Good to know," Finn said with a small laugh before looking ahead. "So, you about ready to conquer this dungeon?!"

Jake had already knew what time it was. "Y'know it dude!" With that final declaration, both Finn & Jake gave each other a fist bump before walking ahead to the start of their grand adventure. After taking a left out the corridor they were previously in, they were met with a very peculiar sight.

There, in the middle, simply laid another small flower. However...

This one was smiling.

"Howdy! I'm FLOWEY. FLOWEY the FLOWER!"


[END]


So some quick AUTHOR NOTES.

Yes, this is ANOTHER new story, and yes I am aware of ones that haven't been updated.

It's just with what I like in certain times in which I able able to write, and if I can come up with ideas. But with some downtime I have I am able to write again.

With this one, I didn't really like some of the crossovers fics that others wrote, and I wanted one that felt like a true crossover between Adventure Time and Undertale. Like how the first five seasons of Adventure Time was. This also is without any MAJOR drama as this timeline doesn't get the FP breakup and doesn't go past season five (No to be biased as I am still on the 5th season as of writing this).

So any questions as to how this'll go, leave reviews if you can. I'll be going ahead and writing up the 'Ruins' section as I put out this 'Prologue Chapter'.

Thanks, Matt3265.


Seconds ago, with BMO...

Being put down onto the bed of flowers, the sentient video game console admired at how beautiful they looked.

"So pretty..."

Though the robot could not smell, it wouldn't hurt to try.

Right?

"I like thi-!"

Then blank.

It was dark, yet darker.

BMO attempted to scream, but silence only followed.

Soon, his vision was presented with but a single line of text.

Name.

Right under was a simple keyboard with all twenty-six letters of the English Alphabet, both upper and lower case.

BMO could only mentally type out it's known name in response before another line of text appeared.

Name the fallen human and dog.

Another simple answer.

Finn and Jake

Once complete, everything went white.

Then...

Nothing.

"Uh... BMO?"

As it turned, something flashed onto his little screen for only a brief second...

= )

"Yes Jake?"

And again, it was nothing.