Once upon a time, as the sun was slowly setting in the Candy Kingdom, Cake the beige and white Cat was playfully running away from Lord Monochromicorn, her unicorn boyfriend.
"Yeah, you think you're pretty way up there but you can't get me!," she said while getting smaller to disappear from Lord's sight.
Lord Monochromicorn stomped and scratched to tell her he would come and get her.

Meanwhile, Fionna the Human, a twelve-years-old blond adventurer and Prince Gumball, a humanoid made of bubblegum and the ruler of this realm, were in in the Kingdom's graveyard, around a table full of different chemicals.
"Alright," the prince said bringing a flask with fluorescent green liquid to the potion, "let me just add three more drops of explosive diarrhea…"
He added each drop slowly and a giant cloud shaped like a skull puffed out of the potion. Fionna and Prince Gumball both let out a surprised sound.
"Hey Prince Gumball, when we bring the dead back to life, will it be filled with worms?" the blond girl asked with wonder in her eyes.
"No," the Prince replied as he put the serum in a syringe, "if my decorpsinator serum works, all the dead Candy People will look as young and healthy as you do."
The human smiled wildy, showing off her muscular arms.
"Pick up that platter, strong girl," he asked nicely.
Fionna picked up a serving platter and opened the silver lid, revealing a Candy Person corpse.

"Old Mrs. Cream Puff?," she asked, surprised.
"We used to date," the prince giggled before applying the serum into the dead body.
Fionna put the platter on the table watching Mrs. Cream Puff's corpse starting to glow.
"Something's happening!" she yelled, then crossing her fingers, "Come on, come on…"
"Work," the Prince asked of it as the dead Candy Person arose and moaned.
"Algebraic," Fionna shouted with entousiasm.
Looking at his former subject, Prince Gumball frowned.
"Wait, something's wrong," he said.
"Sugar!" the zombie Candy Person looked for as serum squirted out his eyes and mouth.

The two living ones emitted a sound of disgust before the zombie leaped into the giant test tube they would have used to bring back the whole graveyard to live. The tube, filled with the same fluorescent green liquid as before, shook and finally fell on the graves, infecting the whole cemetery. One by one, arm by head, every Candy Person resting arose from their tomb.
"Hey, look," Fionna noticed, "the decorpsinator serum is working!"
"No, this is wrong. They're not coming back to life," the prince sadly explained as he kneed to see one of his former subjects, a candy shaped like a heart arising and rubbed their head, "they're still dead! The decorpsinator… It's incomplete!"
"Rah! Must eat sugar!" the zombie groaned as they tried to catch Prince Gumball's arm to eat it.
Fionna pushed them back to their grave.
"You're grounded, Mister."
"Oh, this is so very bad," the pink-haired man said thoughtfully, "they're going to be attracted to the Candy Kingdom."
"Why?" Fionna asked, cluelessly.
"Because the Candy People are made of sugar, you ding-dong!" he explained before the Zombie Mrs. Cream Puff climbed on him.
"Gimme some sugar, handsome," she begged.
Fionna pushed the zombie apart from the prince before kicking her.
"Chew on this!"
"Good one, Finn'," the prince giggled before starting to run, "quickly, to the kingdom!"
Fionna followed Prince Gumball, kicking zombies on her way, asking of them to "get a life".

Both ran to the Candy Kingdom Castle and the prince rushed through the halls and the stairs to reached the main bell.
"All citizens of the Candy Kingdom!" he yelled as he rang the bell, "report to the palace, immediately!"
Every Candy Person turned to the Castle in confusion but still did as their prince asked and walked obediently to the palace. Cake was surprised too to hear the bell but rushed with her boyfriend to the Castle anyway.
"Hurry, sweet citizens," he asked of them, worried, his purple eyes shinning as he looked his kingdom walking to safety.
"Alright, you heard the prince, everyone in" Fionna told them as she met them all by the entrance, "alright, no pushing, come on!"
"Girl, what's up?" Cake asked her as she and Lord Monochromicorn reached the palace's doors.
"The prince will explain everything," the human said looking if any other Candy Person was coming after the yellow little elephant with a mustache, "Field Trunks, get those fresh carrots in here, man."
"Oh, I hope it's not bad news," he complained, carrying a basket full of carrots with his trunk.
"Did we get everyone?" Fionna asked Prince Gumball who came to help her close the doors.
"All present and accounted for," the striped Piñata Candy Person hanging by the ceiling replied.
"Thanks, Girlfried" said Fionna.
"You're welcome," she said in a singing tone.

"Citizens," the prince called to get their attention, "we are assembled here in the candy foyer for a momentous announcement. Tonight we are all going to have... a slumber party!"
"What?!" Fionna yelled as the crowd was cheering, "Wait! What about the zom-?!"
"Go ahead and start partying," Prince Gumball advised them as he cut Fionna by covering her mouth.
"But, Prince," she stated with her muffled voice, "the Undead-"
"We'll be right back, everyone," he said as he dragged the human to a room somewhat more private, in front of a worried Cake.
"Fionna," the prince whispered, "the Candy People can't know about the zombies."
"Wha?!" the blonde girl shouted.
"If they knew, they would flip out," he explained, rolling his eyes.
"What do you mean "flip out"?" she asked, worried now.
"I mean they would flip out," the pink-haired man said in a very serious tone.

Meanwhile, in the cemetery, a caramel malt wearing make-up and a cap, answering by the name of Starla arrived with a shovel, unaware of the past events.
"Prince?" she asked, "it's me, Starla the Undertaker. I brought you a larger corpse shovel. Oh, Prince? Well, I'll just wait for you here, then. By the mausoleum. With my back turned. And my defenses lowered."
As Starla waited for the prince, a Candy Zombie opened the door of the mausoleum and went up to her. The caramel malt could scream, the caramel malt could gasp, but her fate was doomed. Scared out of her mind, she exploded with a loud bang.

"Candy People explode when they get scared?!," Fionna wondered, quite afraid herself now that she knew such things.
"Not telling the Candy People about the zombies is so important that you need to promise, Royal Promise, not to let anyone find out about the zombies, ever," the Prince explained in his serious tone and wide open eyes.
"Okay, sure," she said carelessly.
"No, Fionna," he stopped her, "You have to Royal Promise."
Yes," she swore as she knelt, still quite mindlessly, "I Royal Promise."
"Now I must cloister myself in the lab and finish the equation to my decorpsinator serum. You keep the candy folk distracted and ignorant. Can you do that?" he asked of her.
"Yes, your highness," she promised.
"Good. Don't tell anyone about the zombies," he warned her as he left by a door situated behind him, "Never ever."
"No, wait," she said as she thought back, "Can I at least tell Cake?"

"Tell me about what, honey?" Cake asked as she entered the room.
"You know, about the outbreak of zom-" she started before stopping herself from committing a huge mistake.
" Alright," she chuckles "what's going on?"
"Uhh, nothing at all, girl!" she laughed awkwardly before skipping into the foyer.
"Hey, honey," she said as she touched her shoulder friendly, "I think you and Gumball are up to something."
"Ahha ah, what? No, no way," she replied nervously as she freed herself from the cat's touch.
"Whoa, you guys are up to something. Is it some sort of secret romance? Come on, tell me what you've done in there!"
"Who wants to play "Truth or Dare"?" she asked the party-goers to skip Cake's questions.

"Ok, Chocobanana," Fionna explained as she stepped into the circle, "you may ask someone to tell a deep truth or a saucy dare."
"Mrs. Cupcake," the dipped banana asked the muscular cupcake girl, "truth or dare?"
"Dare," she said proudly.
"I dare you to take off your wrapper," she commanded her, followed by the others.
"Hey seriously, girl," Cake said as she shouldered Fionna, "I'm your sista. Sistas are supposed to tell sistas everything all the time. What are you and Gumball up to? Is everything alright?"
"Yep! Fine! Everything is great! Heh, heh," she lied badly, "except for that. Whoa."
Their attention was now turned to the now naked cupcake, revealing her caramelized body.
"I didn't know she was caramel," Butterscotch Butler stated with her familiar Scottish accent.
"Cake," called, "truth or dare?"
"Truth."
"Do you prefer chocolate or fudge?"
"I can't eat chocolate or fudge 'cause I'm a cat and they'd probably kill me," she explained thoughtfully, "but hmmmmm probably... both. Fionna! Truth or dare?"
"Dare! Haha!" she exclaimed to avoid Cake's questions.

"I dare you…" she said slowly to find a way to get her answers anyway, "to tell me the truth about what's going on in your mind. What were you and Gumball talking about when you were alone together?"
"Umm, ahh, the truth is, ahhh…" she started nervously as every eyes were looking at her to hear what the human and the prince were doing alone together.
You promised you wouldn't flippin' tell anyone! She remembered before adding some of her imagination to the memory: Oh, you're so cute, Fionna.
"Ahhh... the truth is…" she found a way out by taking a sock, "that I'd rather play Dodge Socks!"
She throws the sock at Cake, making Gumball's voice disappear from her mind.
"I'm not playing dodge socks 'til you stop dodging my questions," she said annoyed before sniffing the socks, "Hey... Old Mrs. Cream Puff? Isn't she dead?"
"Hey, give me my sock back!" she shouted, almost caught, "Dodge Socks was a bad idea!"
"Whoa," she groaned, both angry and worried, "look honey, just tell me what's up, 'cause you are crazier than a cannonball tonight."
Oh, my globness! she thought as she was seeing a horde of zombies coming to the palace from the window, Prince hasn't finished the equation and the zombies are here!
"I, uh," she said in a hesitant way, "he just want this slumber party to be super fun, and if I did have something to tell you, then I would in a second, and it would make my life easier, unless there was something stopping me, like a promise, but there isn't, so I won't, so it's cool."
"Sugar!," she heard the zombies begged as she shut the shutters.
"What? You lost me," Cake stated lost indeed.
"Umm... Hey, you know what time it is?" the human asked to change subjects.
"Adventure time?"

"No, time for Seven Minutes in Heaven! You're first," she said as she pushed her towards the private room.
"Really?" Cake wondered.
"Lord Monochromicorn!" she called, "in the closet with Cake!"
"M-E? O-K-A-Y, I-L-L P-L-A-Y" he stomped and scratched.
"Okay, okay, alright," she agreed as she was dragged to the closet and the door was closed "but in seven minutes, I'm gonna come out and make you spill your beans, Fionna."
"I can't hear you all the way in heaven!" she yelled as the opened the window to see the zombies coming and starting to bang at the door.
"Umm, does anyone else hear that?" a pink bon-bon who was sitting near the doors asked.
"What? Hear what? I, I don't hear anything," she reassured her as the Candy People seemed also worried by the noises.
"I hear something I don't understand... and it makes me scared!" the girl said as she shook, lifting her tiny leg from the stairs her feet were resting on.
Meanwhile a snail was waving, unnoticed.
"What? No, Chelsea. Everybody, wait. What noise? You mean this noise?" she asked as she turned the radio and the party lights on, leading to the Candy People laughing, dancing and, more important, relaxing.
"Yeah! Dance it! Bust it up! Uh! Uh! Uh! Oh!" she advised them, dancing herself.
Unfortunately, the zombies found quickly their way to the other main doors, that were not even unlocked. Scared, Fionna rushed to them, grabbing a table on the way.

"What is this game you are playing at now, Fionna?" Chocobanana asked happily.
"Uhh, it's... Blockado," she tried as she barricaded the door with the table and a hammer, "haha, the game of barricades. Come on, let's block all the entrances and windows!"
The Candy People all bought it and started to play the game, barricading all doors and windows with any furniture they could find.
"Alright, this is not a permanent solution," she said to herself, "think Fionna, how can you keep everyone from finding out?"
"Find out about what, Fionna?" a hanging candy asked casually.
"Girlfried, the talking piñata! Your convient appearance gives me a great idea. Everyone, grab a stick! New game! We're gonna smash some piñatas!"
"What?" the piñata asked, afraid.
"Except for you, Girlfried," she added
"Oh, thank globness."
Now everybody take these blindfolds," she explained as she ripped ribbons from a Candy People entirely made of it, "thanks, Taffy Boy."

Once everyone was blindfolded, Fionna ran to the doors, avoiding to get smash by a wooden stick on the way.
"Alright, everybody, get together. I'm hanging the piñatas…" she said as the zombies burst through the barricades , "they're all around you. Smash the piñatas!"
Here came the fight, Fionna and all the Candy People started to destroy one by one the zombies, leaving a disgusting mess of rotten candy behind them.
"Yeah! You guys are on fire!," she congratulated them all.
One by one, every zombie Candy was leaking sugar. Sugar that all the living started to eat.
"Oh, it is so tasty," Chocobanana exclaimed.
"Yes! We did it! My improbable plan worked!," she stated as all the zombies seemed to be dead.

"Whew!," Cake sighed as she came out of the closet with Lord Monochromicorn.
"H-E-L-L-O" the Lord stated.
"Seven minutes up yet?" she asked grabbing a jelly filled doughnut before seeing the mess and running to Fionna "Whoa! What the nuts happened here?!"
"Oh, we killed all the zombies that Prince Gumball and I raised from the dead," she confessed.
"Really!?" she wondered in surprise before freezing as did the rest of the world.
"Cake? What's going on?" she worried as she walked around.
"What? Huh? Oh, Fionna!" Prince Gumball called, not affected by the curse, "did you break your Royal Promise?"
"Yeah, but, I mean, all the zombies are dead. The Candy People won't freak out. What's the big deal?" she asked clueless.
"This is so, so very bad, Fionna. You can't break Royal Promises. Never, ever, never. No matter what, forever," he explained, very serious.
The room was suddenly shaking.

"The Guardians of the Royal Promise are coming for us," he whispered horrified.
A purple elastic hand burst from the ceiling, taking the prince and the human outside.
"Fionna the Human," a first guardian called, looking at them through their mint green eyes, "you have broken a Royal Promise for which the penalty is trial by fire."
A second guardian came to burst fire through its mouth.
"That's stupid," she stated.
"Wait! She's my friend! Isn't there another option?!" the prince asked.
"Yes. Because you care for the promise-breaker, we will give her a less hot trial. You must now answer…" the first guardian started.
"...Math questions!" the second finished.
"Mathematical!" Fionna exclaimed.
"Fionna," Gumball disagreed, "you're terrible at math."
"Awww…"
"Now, solve this!" the first Candy with a gum machine as a head said as the other one showed, through his eyes, the toughest question of all time.
"Uhh..." Fionna hesitated, sure to have meet her final fate.

"Oh, wait, wait," the second guardian said, "I thought of a better one."
The equation disappeared and was changed to:
"Yes! Two plus two. Solve it or die."
"Uhh. Four, right?" she answers not without some hesitation before Prince Gumball bored expression and the laughs of the Guardians.
"Oh, correct," they both realized before exploding.

Afterwards, night became day. The second guardian came back to life before turning his back to blow bubbles.
"What's happening, Prince?" Fionna wondered, still on the first guardian's hand.
"You've defeated the broken royal promise! The Gumball Guardians are resetting!"
After his explanations, the first guardian dropped them. Fortunately, they were teleported safely back to the Prince's lab.
"Slamacow! That was tops! Who's not good at math? I was all "Four!" she laughed proudly.
"Four, four... Four, four, four…" he repeated thoughtfully "that's it! The answer was so simple, I was too smart to see it!"
"You're welcome!"
" '4' is the last figure I need to perfect my decorpsinator serum," he stated as he finished the equation on the blackboard.

Once the serum done, the Prince Gumball and Fionna the Human cured every zombie of his Kingdom.
"This is messed up, but sweet," Cake admitted.
"I-T I-S," Lord Monochromicorn added.
Every Candy People could see their dead relatives coming back to life. Everyone was smiling and hugging each other.
"Starla!" Cake exclaimed.
"Mornin'."

"Girl, you broke a Royal Promise? You're nuts. All you had to do is say that it was a royal secret. I know what's up," Cake explained to Fionna before walking away.
"I hope you grasp the full consequences of breaking promises," Prince Gumball wondered as he met Fionna's gaze.
"Heck yeah! If I break a Royal Promise, I get to fight zombies, throw slumber parties, awake Gumball Guardians and... and…" she listed, "And reverse death itself!"
"Oh, you are adorable. But keep your promises, okay?" he asked of her.
"I will, Prince," she swore.

Suddenly, Fionna felt something bitting her leg. It was Starla.
"Starla, you're not a zombie."
"I can't help it. Flesh is delicious!"
"You're delicious!" she teased her and squeezed her.
"Don't squeeze me! I'll burp!"
And indeed, Starla the Undertaker emitted one of the loudest burp of her new life.

THE END