Disclaimer: I do not own Adventure Time or Adventure Time Insurrection. They belong to their right owners Pen Ward and 209riveraiseral.

3 days have passed since Fionna's rogue ways had occurred, during the course, multiple lands and villages all over Ooo had either been flooded or destroyed by the mad 16 year old, with most of the continent's inhabitants taking refuge in either the Ice Kingdom or the Swamplands.

Despite multiple annoyed princes who were forced into listening to Ice Queen's constant rants on how Fionna betrayed Ooo, and that it wasn't like her at all, she constantly went as far as constantly flirting with them, which attended to anger the royals even more.

However, despite Ice Queen's immaturity, most of the Princes of Ooo sadly couldn't help but agree with her, as she was right about Fionna going rogue, and talking appeared to phase her lesser and lesser. Also they noticed that Fionna's appearance was starting to worsen, as it was witnessed by multiple kingdoms, that the more badder Fionna became from her rogue ways, the more different, and horrifying she became in appearance wise.

It was stated by witnesses, that Fionna assaulted the Goblin Kingdom, without hesitation or mercy, and even went as far as to turning herself into a massive tsunami, and eradicating the entire kingdom, sending most of its inhabitants running into the nearby forests, while others who showed bravery and fought against Fionna and perished on the spot. It was revealed by the surviving goblins, that Fionna, by that time grew 2 Fins out from the side of her head, which cut through her rabbit hat, while two more grew from the back of her head. Her skin also had completely changed from her darkened skin to a new dark blueish greyish skin, while multiple fins also appeared on her legs, while some even appeared on her arms. It was revealed that Fionna has now formed an appearance that was enough to scare even the major villains who were once considered the fearless of them all, feared the 16 year old.

At some point by the 4th day, Prince Gumball's wound that he sustained by Fionna during her assault on his kingdom, was starting to heal, but this didn't stop him, as both he, and Marshall Lee both gathered the courage and decided to confront the 16 year old, as she was moving towards the Breakfast Kingdom.

The two were able to make it on a nearby field, while hiding behind a large group of rocks, which overlooked the entire field along with the Breakfast Kingdom that was not that far away in the distance, Prince Gumball was looking through his binoculars, scanning the field for Fionna, her sword was leaning against a tree. During the wait, Marshall Lee felt nothing more but bitterness and anger towards Fionna. As a matter of fact just thinking about her or saying her name, was enough to make her clench his fists hard, as fire formed in her eyes. For he once thought of the world of her, he loved her with his heart, now that was gone.

Prince Gumball was able to noticed this as he said "Remember! We only fight to defend ourselves!" Prince Gumball barked as he was looking through binoculars scanning the entire field only to spot Fionna.

"There she is!" Prince Gumball said, as he grabbed her sword, placing It on his back, but not before turning over to Marshall Lee and saying "Now remember we just wanna-" Marshall Lee felt something spark inside him to the point that he flew quickly away passed Prince Gumball, "Marshall Wait!" he yelled only for his words to be drowned out by the heavy gusts of wind that was blowing directly in his face, due to the fast speed that Marshall was going right now, "Dong it Marshall!" he yelled

"YOU!" he screamed with a voice of pure anger and hatred as Fionna turned around with a glare, only to be pounced on by the enraged Vampire King beginning an all out attack on her. Fionna smiled as she fought both boys. "Two against one? How original" she joked as she dodged most of Marshall's attacks by this time he was actually trying to attack Fionna, in hopes of getting justice for the way she almost killed him 4 days ago, back in the Candy Kingdom.

At one point, Marshall Lee roared as a beast, as he send his fist hard against Fionna's nose sending her flying against a nearby tree. "OW!" she cried as tears welled up in her eyes. Marshall then felt bad and floated over to the 16-year-old to see if she was okay, "Fie, I'm so sorry I didn't mean to-" he said but was cut off when Fionna grabbed his throat cutting off his air supply, "haha! How gullible you boys are, if a girl starts to cry you rush to their aid like a stinking damsel in distress, so cute!" she snapped. Marshall was horrified when he saw Fionna'didn't even have a scratch on her, if his punch were nothing. Prince Gumball just couldn't believe it, he witnessed Marshall Lee use his most dangerous and deadliest attacks on her, a single blow to Fionna's nose should have been enough to either knock her out, or at least break her nose, but Fionna's was there strangling Marshall to death.

Fionna then threw Marshall across the field making a trail of dust behind him. She quickly darted at him and lunged at him with her powerful jaws opened, Fionna let out a demonic growl as she chomped down on Marshall's arm causing him to scream in agony, with swift punches Marshall tried as hard as he could to get her off, but Fionna' with one of her arm fins, slashed at his cheek, leaving a large scar on his left face. Within moments Marshall Lee had shape shifted himself into a large beast, as Fionna released her bite and leaped off of him, landing on the ground smirking at him, her white sharp jaws now drenched with vampire blood, as she licked them with his tongue. "Mmmm, delicious." she mocked

"For over 16 years I always thought you were my Friend!" Marshall screamed angrily as he sent attacks against Fionna, "I loved you! And I still do" Fionna leaped out of the way as Marshall Lee's beast form destroyed a nearby boulder, "I looked up to you to Protect Ooo! And My best friend!" Fionna was constantly laughing at Marshall's pain, as Fionna quickly dodged another attack that was sent down by him. "You Betrayed Everything! Who you are Who You Were!" Fionna continued to listen with ears shut grin still showing, as her glowing pink eyes continued to be locked heavily on the enraged Vampire King. "Well maybe you idiots should have chose better." Fionna stated as she slammed both her fists together, as water smashed on Marshall Lee from both sides, completely knocking him out, but fortunately not removing him stitched us hoodie, to expose him to the light. "Good night Dark Knight." Fionna stated, only to be ambushed from behind by an enraged Prince Gumball, who slashed Fionna's back with his blade causing her to scream in agony, before being punched in the right cheek sending her crashing against a nearby tree. Fionna quickly got up and saw Prince Gumball now in pure rage.

"Ahhh, it's about time you showed up candy arms! I thought you would wanna another go." Fionna stated not surprise at all, as she revealed her back scar get healed instantly with water, much to the horror of Prince Gumball. "Alright lets do it." Fionna then directed as she summoned her water spear and kopesh and eyed down the candy prince as he unleashed a barrage of jelly beans from his palms, Fionna just looked at the candy prince with a unamused frown letting the jelly beans harmless bounce off her. When the prince ran out of steam Fionna attacked. She leapt over Prince Gumball and sending of her kopesh against his back to even the score, but her attack was instantly blocked by his own blade. "Jelly beans? Really?" Fionna snorted with intense unamusement in Prince Gumball's elemental power, before she dodged an attack by him. "This has gone on for long enough FIONNA! Come to your senses at ONCE!" Prince Gumball screamed out of intense fury only for Fionna to once again laugh in his face. "Oh your so hot when your mad." she insulted, "But nah, I think I'll keep on doing my does. Who knew it felt so good to do something so bad! I should have done this years ago!" Fionna replied as she jumped at the prince and sent a kick at his face , sending him to the ground. He was able to regain his senses just in time to stop another attack by Fionna.

"Fionna! Listen to me, your making a big mistake, If you keep this up it's going to one day get you killed!" Prince Gumball yelled, as he could feel a sadness welling up in him, but Fionna showing no acknowledgement, instead just laughed it off and said. "Oh please PG, if the Lich couldn't even beat me at 12 years old, nothing on Ooo can, and you know it." Fionna stated before grabbing Gumball's head with her hand and lifting his head up to her level, his eyes locked onto her glowing pink eyes. "I'm untouchable Gumball! Nothing on Earth can destroy water, and you know it." And with that Fionna flung him back to the ground. Before walking away she said "Thanks for the rematch Gumball, much appreciated, keep this up and maybe just maybe I'll keep you alive in the future."

Prince Gumball slowly got up, as he soon saw Marshall Lee had just woken up, still all drenched in water. Fionna had already disappeared out of sight giving the vampire king and candy prince no options left. Finally Prince Gumball came up with the solution all that was left to stop Fionna ways was one man, the King of the Fire Realm.

The Fire Kingdom …

In the Fire Kingdom, a group of flame based warriors were training at camp Ignition, which was the most strongest and powerful camp in the Fire Kingdom, and was also known as the official military headquarters of the fireside guardsman. With their new experimental fire swords and spears, the warriors including multiple trainees trained themselves in order to prepare for the great duel that was set to occur by the end of the month. The great duel was a specialized tournament that was best suited for the entertainment of warriors that were present in the militarized portion of the Fire Kingdom. It was said that the militarized portion, was set far from the Fire Kingdom's palace, where it would take several hours if not longer to send messages to Fire Queen, however ever since Flame Prince took over the throne, and became Flame King, he has invested multiple lava rocks in order to specially design a new way in communicating with the military section of his new kingdom.

The method of messaging was known to be the art of using fire falcons, a group of flaming birds, that were once thought to be extinct, but never were. In the wake of communication, a Fire Falcon would deliver a message engraved in rocks, and would fly off to the palace in order for Flame Prince to read, these ways of delivering messages were known to be way more faster in the kingdom, then its traditional ways, when Flame Queen was in power.

Among garrison witnessing the warriors training was Flare, Flame Prince older sister, and the eldest daughter to Flame Queen. "Useless!" She barked at one of the defeated warriors as she approached them as they assembled to listen to what the higher up had to say. "The skills of our greatest ancestors will never treasure if you cannot possess the skills to wield them." she started off as she began to pace back and forth in front of her recruits. "The skills you obtain to protect his majesty, will not go in vain as long as I am around." She then stops in her tracks, "For we are the fire warlords of the Fire Kingdom! Never forget that honor!" She paused as she heard all of her recruits yell, "Sir yes sir!" At the same time before disembarking in order to train even harder.

However while they were training, small puddle of water was slowly forming on the hot grounds, before it began moving towards the fire camp, at a slow calm like pattern, without any one of the fire beings in the area knowing. Back in the camp, Flame Prince's sister Flare, was soon called over by one of her highest ranking fire warlords. "Walk with me a moment Flare." Flare smiled as she looked to see that the Fire lord was her dear friend Salmora. Flare agreed to the walk, as Salmora led Flare through the camp as they continued to watch multiple fire lords train, but Flare couldn't help but notice that Salmora wasn't her usual, wise self today, in fact she looked really worried, but what she said, would only horrify Flare.

"Word has it, that the Kingdoms on the surface had been attacked and swallowed by massive flooding," Salmora started off, while Flare listened as hard as she possibly could. "Both the Small Kingdom and Candy Kingdom, last week, while the Breakfast Kingdom, was just destroyed yesterday." Flare couldn't believe what she was hearing, how can an army destroy the Kingdoms within one week, or better yet, how, just how could they even bring down the Candy Kingdom, the one of the most advanced kingdoms in all of Ooo? "How? How is that possible, what is destroying the Kingdoms?" Flare then started with a serious tone in her voice, as Salmora stopped in her tracks, took a deep breath and looked at Flare, before answering. "It's Fionna." Flare, was indeed shocked as to what he heard, Fionna? As in the hero who had been protecting Ooo for over 12 long years, the young girl that fell in love with her younger brother, the one that broke his heart because of a stupid dream. This couldn't be right at all, she just had to be sure that she was hearing correctly.

"Fionna? Th-That's impossible," Flare started off as she looked Salmora dead in the eyes, "Fionna is a human of honor and heroism, she would never destroy kingdoms, that she had protected for the past 12 years." Flare stared into the eyes of Salmora, only to see that she was telling the truth, much to Flare's horror. "It is no lie, my friend, Fionna had become grievous, and broken ever since the King broke up with her along with multiple incidents occurring on the surface, she is broken from within." Salmora stated as she walked to a nearby window, overlooking the Fire Kingdom's city and palace. "The Fionna we all know, is gone, she had become a monster, one that breathes liquid and spits oceans out." He then turns back to Flare who now has her arms on her hips. "You must go over and inform the King, of this information at once, she could probably pop down here any second." Flare didn't know what to do, she wanted to do what was right and inform Flame Prince the hash news, but as a protective older sister, and someone who actually knew Fionna over the years, she actually felt as if she was small in this one incident. "Fionna won't be able to get down here even if she wanted," Flare stated off with a smile as Salmora turned toward her, to see the Eldest daughter of the flame family smiling at her. "Fionna wouldn't be able to get down here unless she has a flame shield casted upon her, if she were to come down here without one, she would burn to death, and she knows it. Even if she is bad now, I don't think she would be stupid enough to take the chance to strike us." Salmora sighed, Flare was really underestimating Fionna, but instead of attempting to argue with her, Salmora instead turned to her and said. "Flare, Fionna is not as weak as you think she is, you must at least tell the King, this Kingdom must be alerted at once, otherwise we're all going to be underwater, by night fall." Flare sighed, with annoyance, and stated while crossing her arms over her chest. "You are worrying for nothing my friend, the heat of the Fire Kingdom, is over 6.000 degrees Celsius, water wouldn't last a second down here without evaporating into steam?" Flare tried to reason with Salmora, before finishing off her statement, "Besides, even if Fionna were to come down here, she would have to make it through streams of lava, and a large flow of steaming hot geysers and lava streams, and without a flame shield, she wouldn't get very far."

Salmora sighed with huge annoyance, as she knew that Flare was not only evading her statements to inform the Fire King about Fionna's apparent future attack on the Fire Kingdom that could occur at anytime. All of a sudden while a group of flame warriors were practicing one decided to step off campgrounds in order to try and practice his skills, he had hoped to impress Flare in order to try and get an early rise to the rank of Firelord, which in the Fire Kingdom was the equivalent to the Military rank of Private, however he had no idea that water was making its way towards the camp's walls until he heard its flow. "This will be a perfect time to practice without distractions," he said before hearing the sounds of water coming his way, which caused him to slowly turn his head, only to see water coming his way alongside what appeared to be glowing pink eyes. Fire soon went out from a nearby volcano lighting up the entire area for a second, revealing the figure to be Fionna approaching. "FIONNA!" The cadet yelled in horror as he quickly retreated back towards the Camp, as Fionna charged faster the water surrounding her now turning into a wave like substance.

The trainee quickly raced through the camp yelling, "Water! WATER WATER!" His cries got the attention of both Flare and Salmora, causing Salmora to gasp. "SHE'S HERE!" Salmora quickly turned to Flare who was shocked as she saw flood waters racing through the camp, as Fionna quickly was slashing and cutting her way through anything in her path, "Go tell the King now! NOW!" One trainee cried only to get swept up by the flood. Both Flare and Salmora could do nothing but watch as multiple trainees attempting to contain it, but are failing miserably. "Flare evacuate this camp at once! Camp Ignition is lost! Get to the palace and tell the king now!" Flare just brushed off Salmora as she saw Fionna emerging from the tides, as she smirks at all the deceased fire trainees on the ground. "Knock knock." Fionna said to herself, only for Flare to growl in anger. "Forget it. I will personally see to it that this traitor pays in blood for what she did to these trainees." Salmora tried to stop Flare, but failed as she currently leaped on the side of the tower and launched an attack against Fionna, who was able to dodge it. "Well well well, I was wondering when you were going to come out, is your baby brother home?" Fionna asked in a real insulting way. "If it's the king you wish to see, then you will have to go by me first, traitor!" Flare barked as her arms turned into what appeared to be fiery blade like substances. "As you wish torch." Fionna stated as she charged Flare while dodging multiple attacks conducted by Flame Prince's older sister. Fionna at one point was able to send multiple hits towards the fire leader, but was blocked on the fourth hit and forced back. Flare responded by sending a blast of fire through her hands as Fionna held her fist out and a large water barrier occurred right in front of her, forming nothing but steam, but having no effect whatsoever. "Ha!" Fionna snatched while leaping out of the steam screen launched multiple water blasts of her own causing great damage to Flare, a couple of trainee's that survived the camp's flooding arrived to try and aide Flare in her time of need, this got Fionna to smile.

"Now things are getting fun." The trainees all charged at Fionna at once, Fionna dodged multiple attacks from swords, spears, and lava blasters, and even went as far as to killing up to 14 trainees in the first failed attempt, using her trainees to her advantage, Flare quickly leaped into the air and send a scorching hot fire attack against Fionna in the center, grazing her cheek, spilling out what appeared to be a light blue liquid substance. Satisfied at her attack, Flare watched with a smirk as Fionna covered her face, only to become horrified when he saw the 16 year old turn back to her direction, and remove her hand as her burned scar like face healed itself. "What?!" "Boo." Fionna smirked as she sends a large blast of water towards Flare causing her to be put out, as she laid motionless on the ground.

As Fionna moved up to try and finish off the fire leader, more trainees arrived and forced Fionna's attention away allowing the fire leader to escape with the help of Salmora, but Flare was in a really bad wet like state. "FOOL! I told you to Inform the King! Now get your hide down to the Palace and let our King know about this or we're all dead!" Flare, seeing the error of her ways quickly nodded and slowly made her way out of the camp, despite in her weaken state, she was able to make it back to the stairs of the Fire Palace, she was able to climb up a certain flight but then collapsed due to the extensive loss of lava. He was quickly noticed by Cinnamon Bun, who had just come back from a different sector of the kingdom, that she was sent over to apply fire supplies too, only to be horrified that Fionna was already in the Kingdom, after seeing Flare's state and a large steam cloud hovering over in the distance. "I must tell Phoebus!" she cried as she helped Flare into the palace.

Back at Camp Ignition…

While Flare was attempting to escape, Salmora, remained behind in hopes of coordinating a successful defense against the 16 year old humanoid, and was able to conduct a magma drop on the camp, in hopes of eliminating Fionna, this tactic failed, due to Fionna flowing onto a nearby rock, but the tactic was able to dry up most of the flood Fionna left behind, allowing the camp residents a fighting chance. "Your going to regret that." Fionna barked as she leaped off the rock and landed onto a rock, where multiple refugees were using the magma to their advantage in hopes of pushing Fionna in, but each attempt they did to try and attack Fionna from the magma failed, Fionna then proceeded to leap in the sky where her watery weapons were formed and proceeded to send heavy blasts of water in all directions killing multiple trainees and flame warrior reinforcements that had just arrived after noticing the steam cloud from the Kingdom's residential area.

Fionna glared as Salmora herself leaped from out of the magma, with two spears and battled Fionna on top of the rock, Fionna was able to take a few scrapes from the fire spears, but because of her power he healed herself every time, at one point Fionna leaped over Salmora and send a blade right into her torso. "Your too hot hon, time to cool off." Fionna stated as her liquid spear and kopesh soon shot a huge stream of water from its point blowing Salmora apart, while she screamed in agony. "One down." Fionna stated as she then noticed the other fire warriors approaching him. "More fun, come on!" Fionna challenged, as she crossed her water weapons, "I got plenty of liquid for all of you freaks." All guards and trainees moved in to attack Fionna as she fought them one at a time on the rock, and was even able to outwit and out match overwhelming numbers, one flame warrior quickly raced to the suburbs of the Fire Kingdom and activated a newly experimental fire guardian, which in turn unleashed a barrage against camp Ignition. Fionna leaped out of the way missing most of the giant boulders, before leaping on top of the wall facing the fire guardian. "You think that is going to do anything? Your wrong freak." Fionna stated as she leaped into the air, while the fire guardian unleashed a column of fire from both arms on the 16 year old. Fionna dodged each attack then grew liquid wings flying into the sky, and landing on top of the head of the guardian before jabbing both blades into the central brain area, causing the giant to roar in agony. Fionna then leaped off and fought several more warriors, on the ground, before dodging another barrage of asteroids conducted by the fire guardian.

Fionna smirked as she purposely got in front of multiple fire beings causing the guardian to accidentally kill its own inhabitants, then Fionna soon leaped into the air, and with one twirl in the air she soon sent a flurry of water blasts in all directions killing anything, and even pushing the guarding hard against the wall causing a temporary cave in on one half of the kingdom, before Fionna quickly landed on the torso of the guardian and send both blades hard into the eyes of the giant and sent full blasts of liquid into the guardian's insides, killing the warrior inside, and causing the guardian to shatter, gasping all of the warriors that was left in the camp.

"She has broken through! The Kingdom is breached!" one of the warlord leaders ordered as multiple flaming victims dropped their weapons and ran for their lives in a panic like state, as multiple other higher-ups cried out "Retreat! Retreat!". The crowd even went as far as to trampling one another. Upon landing, Fionna soon smirked as she saw now that the fire warriors were now running, knowing that nothing can beat him. "Now lets have a little game of hide and seek shall we. When I find you … I kill you." Fionna stated to herself as she liquefied her weapons and slapped her hands hard, causing a large wave to break through and destroy what was left of camp Inertia, before diving in herself and chasing after the remaining warlords and trainees who are on the run. As the water raged back into camp Ignition completely covering the camp, multiple warriors and trainees crossed Ashellor Bridge, a bridge that was connected between the camp and the Fire Kingdom's residential area One flaming guard destroyed the bridge by sending a fire blast to the ceiling of a nearby stalactite in hopes of preventing Fionna and the flood from crossing the residential area, but he soon became horrified when the flow of water soon hovered over the abyss leaving to the Lava pits below, and smashed into the buildings killing multiple fire beings inside them.

Multiple houses, and streets in the Fire Kingdom easily got swept away from the flood, as the warriors tried whatever they could to block the raging water, but failed, Fionna soon arrived from out of the water, and with her powerful jaws chomped one of the warriors off of their flaming horses killing one, and eventually the other, with the use of the same tactic, within moments, the flood stopped, and all the rest of the warriors that were in Camp Ignition, were now slain, and nothing was left to fight Fionna as she just smirked looking up at the Palace that was not far from his position. "Okay, time to have a little fun with Phoebus." Fionna stated with a smirk as she walked towards the palace, leaving behind a large water covered wasteland of fire corpses on the ground.