In the actual show, the bad guys are monsters, not mutants, but I changed it around to something different so the Hetalia characters I used would still be somewhat recognizable. Other than that, please enjoy!
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"Far, far away, in a magical land called Mewni," an accented voice explained, a tall, extravagant castle gleaming in the distances, "lived a princess,"

The scene cut to a large painted portrait of a girl frowning. She had bright red hair flowing in waves down her back, greenish-blue eyes, and was dolled up in a poofy blue dress. On her cheeks were two perfect pink hearts, and on her head, a crown. To her left was another, much older woman, with curly brown hair pulled in an up-do, her dress also blue, form fitting on the top and wide and fully on the bottom. She had multicolored brown eyes and purple diamonds on her cheeks, and a golden wand that was topped with a diamond heart. To her right was a man holding a golden staff, in a blue tux and suit. He had wavy blonde hair with a single curl sticking out from the part, and violet eyes. Both adults were also frowning in the portrait. "Dreaaaammmzzz Butterfly."

Suddenly, a girl slid down the railing next to the portrait, breaking a diamond topping the column at the end of the stair case and knocking the portrait down on herself. She tore her way out of it, smiling brightly, before she realized the chandelier above was swaying violently, and she froze.

"Some people have called me reckless and irresponsible, just because... I fight mutants! And tame wild unicorns! I like to have fun, and I'm about to have a whole lot more, because today is my 14th birthday, and according to tradition, my mom, the Queen, has to bestow upon me, the greatest family heirloom- the royal magic wand!"

~~~~~

The Queen and King stood at their thrones, the King looking rather bored while the Queen looked irritated. The room was filled with citizens of Mewni, and outside, they could all hear the racket with heavy hooves galloping closer. Two guards went to the open the door, but they burst open and broke off. A waricorn stampeded forward, sending people screaming and ducking for cover as it brought Dreamz Butterfly, who clung to it's back, towards her awaiting parents. Dreamz jumped off just as the waricorn leapt over the Queen and King, sending them screaming to the ground, and smashed through the wall, leaving a giant hole.

Dreamz popped up, breathing heavily with excitement as she eyed her mother's wand. She made a savage grab for it, but her mother pushed her back with a gloved hand, her face strict. "Now Dreamz," her mother stated as Dreamz continued to jump up and down, practically biting her fingers, "this wand is a big responsibility." She tried to bring the wand back in front of her, but Dreamz made another grab for it and she had to pull it away again. "If it falls into the hands of evil forces, the universe could be destroyed!"

Dreamz squealed and snatched the wand away from her mother, smiling brightly. Almost instantly, it transformed from a diamond heart on a golden staff to a pink stick with a half sphere on top. The flat surface contained a jeweled star surrounded by a striped blue pattern and lots of teeny yellow stars. On top of the wand was a crown, and flanking the sphere was two small, white wings that flittered as it transformed.

Dreamz gasped in fascination, before waving off her mother's concern. "Don't worry, mom. I can handle it." She practically sang.

~~~~~

Dreamz stood off in the distance, watching the citizens of her kingdom run around in terror. And rainbow on fire over the kingdom is what had sent them into chaos, and no doubt more terrible things were occurring within the limits of the city. She gritted her tear, cringing a little bit, before slowly sliding away into the brush.

The Queen and King, along with a small, floating man with sleek black hair and mahogany eyes, watched the chaos unfold from the window of their chambers. The royal couple lowered their binoculars. "She can't handle it." They said in defeat at the same time.

~~~~~

"Noooooooooo!" Dreamz cried as Royal servants moved her stuff into a carriage drawn by two gryphons. Her parents watched her with emotionless expressions. "I can be good!" She sniffed, falling to her knees and grabbing the bottom of her mother's dress. "Please don't send me to Saint Olga's Reform School for Wayward Princesses!" She cried, but screaming loudly as she envisioned herself being sucked into the school, the gates slamming closed behind her.

"Sweetheart, we're not sending you there." Her father reassured her gently.

"Oh!" She smiled, standing straight.

"Yet." Her mother added harshly, making Dreamz flinch.

"We're sending you to train in a safer dimension. A place called Earth." Her father explained.

"Earth?" Dreamz asked, eyeing them skeptically.

"Manfred! Open the portal!" Dreamz's father shouted, the family entering the carriage as the man named Manfred turned and pulled out a small pair of scissors. With these scissor, he cut the fabric of space, opening a large portal for the carriage to pass through. He stood aside, bowing, as the carriage rolled forward. Dreamz leaned against the open window, watching her home with remorse as she crossed dimensions. "Goodbye, Mewni..."

As the carriage crossed over, a tall man with silvery blonde hair and violet eyes peered out of the bushes, glaring at the carriage and chuckling maliciously. He could have passed from a Mewman, if it hadn't been for the fact that the white's of his eyes were yellow instead of white, and his skin contained a greenish pigment.

~~~~~

The carriage, having made it's journey, was parked outside Echo Creek Academy. A kid approached the gryphons and snapped a photo, causing one to roar viscously and scared him away.

The Queen and King of Mewni stood in front of the principle, who looked rather unamused at the appearance of the two royals. "So, you say you're from another dimension." He said suspiciously, the lights flicking on and off as Dreamz discovered the light switch in the room.

She smiled at her parents. "And you said there was no magic on Earth."

The principle was not entertained. "Yeahhhh, this isn't gonna work."

So the King pulled out a chest full of glittering gold and jewels.

The principle smiled. "She's gonna love it here!"

Dreamz continued to turn the lights on and off rapidly, looking rather pleased and fascinated all at once. Her parents watched her for a moment, before turning back to the principle. "She's going to need a guide." The King stated.

~~~~~

"Spencer Ferrell to the principle's office." The PA spoke into a math classroom. A boy with curly brown hair and pale blue eyes looked up from his work in shock. "Spencer Ferrell to the principle's office."

He smiled, sliding his work away from him as he glanced at his classmates. "Ooohhhhh, looks like someone's in trouble." He chuckled to himself, standing up and walking with a swagger to the front of the class. "So I guess everyone who voted me "safest kid" must be feeling pretty embarrassed right about now." He spoke to the class, who were literally paying him no attention.

He slid up to his teacher, who was painting her toenails on her desk. "Do I need a hall pass?" He muttered.

"Will you just go already?" The teacher snapped, and Spencer shivered, walking away.

Spencer walked up to the principle, smiling with his hands in the pocket of his hoodie as he approached the principle. "Spencer!" He smiled in greeting, holding his chest of treasure. "I want you to meet our new foreign exchange student, Dreamz Butterfly!" He said, gesturing to the girl. She was currently hunched over a water fountain, watching with amazement as she pressed the button, and water came flowing out. She gasped, jumping back, ready to fight the water.

"I need a responsible, never takes chances type to keep an eye on her, and who better than you, the safe kid!" The principle patted his shoulder.

"What? No no no, I'm completely wrong for this!" Spencer exclaimed angrily. "I'm a misunderstood bad boy!"

The principle pinched his cheek, and he glared at him. "You're adorable! Now I'm off to the ice cream shop- daddy's getting all 5o flavors!" He cheered, walking away.

Spencer rolled his eyes, huffing with irritation. He turned to Dreamz, who was now grappling and biting the water fountain like an animal.

~~~~~

Spencer walked down the halls, looking angry, as Dreamz skipped by his side, a disturbingly wide smile on her face. "Thanks for showing me around, safe kid!" She stated, before she began ohh-ing and ahh-ing at various objects in the halls.

"What? No! Whatever you heard about me isn't true! I don't know where people get the idea that I'm so safe- watch your step, loose tile." Spencer warned Dreamz, pointing it out so she wouldn't trip. "It's ridiculous!" He turned and shut an opened locker door. "Careful." They continued on their way. "You wear a helmet to gym one time and you're labeled for- oh lookout broken glass." He paused, guiding Dreamz around the shattered bottle. "Frankly, I like taking risks, and would welcome a little danger in my life."

Dreamz smiled, blasting a magical ray at a butterfly that happening to be flying by. It turned into a screeching winged beast and that grabbed a kid by the sides and flew away with him.

"What the heck was that?" Spencer demanded, now hiding behind Dreamz in horror.

"Oops." Dreamz giggled, smiling awkwardly. "I thought you wanted a little danger."

Spencer stepped away from Dreamz, eyeing her with a dark eye. "Who are you?"

"I'm a magical princess from another dimension." Dreamz spun and waved her wand above her head, creating a rainbow which became surrounded by magical creatures. That moment was short lived, for the rainbow caught on fire, and everything but Dreamz scattered.

Spencer stared at her with a gaping mouth, before smiling and clapping his hands together. "Welp, that brings us to the end of our tour. I'm going home now." He stated, beginning away.

Dreamz waved eagerly after him. "Bye new friend!" Spencer smiled at her, before turning and putting his hood up, his smile dropping. "See you tomorrow! Bye!" Spencer began running. "Bye new friend! See you later!"

Spencer trudged in defeat to his front door, which he opened lazily to laughter. When he looked up, he jumped back in shock.

"Oh, Spencer." His mother smiled slightly from the couch. "Come meet the new foreign exchange student who's going to be living with us." She explained, gesturing to Dreamz, who was sitting on the couch between Spencer's parents.

Spencer stared at them in utter disbelief. "Wha... Wh-wha...?"

"What?" Dreamz smiled, jumping up and racing towards Spencer, grabbing his hand and leading him inside. "I had no idea these were your parents!" She exclaimed as Spencer's parents stood. "I just assumed everyone on Earth had the last name Ferrell!" She said, rocking back and forth as she clutched Spencer's hand.

Lovina looked to her son. "Won't it be nice to have Dreamz's upbeat, lively energy around the house?" She said in a surprisingly calm voice. She was always so much calmer around the exchange students they took in.

Spencer glared at his parents while Dreamz beamed at the compliment. "We could have gotten that from a litter of puppies."

Dreamz gasped, throwing Spencer's arm into his chest and causing him to rock back in shock. "I. Love. Puppies!" She exclaimed, before waving her wand and blasting a pink beam into the ground. In a flash, there was a pile of little Chihuahua puppies sprawled out on the floor, barking and panting.

"Awww." Spencer's parents cooed at their cuteness, while Spencer looked slightly disturbed at the method used for the puppies to appear there. Then, laser beams began shooting out of the puppies' eyes, and everyone's smile dropped. It knocked over a lamp and ruined a family picture of the Ferrells. The chaos traveled as the puppies began running around the house.

Dreamz smiled awkwardly, scooping one of the ground and hugging it to her chest.

Spencer's parents looked horrified, but his dad tried to laugh it off, picking up one of the puppies. "Well, they are really cute." Antonio stated with a Spanish accent, holding the puppy very close to his face, his green eyes sparkling at the cuteness. Then, it shot him in the eye. "Ey, my eye!" He shouted, before attempting to laugh it off.

Spencer's mom turned to the two teens, "Spencer, why don't you show Dreamz her new room?" She suggested, attempting to keep her voice as calm as possible.

Dreamz booked it up the stairs, "Yay!" She cheered, Spencer struggling behind her with her very heavy suit case, the puppies chasing after them.

Outside the staircase window, watching from a tree, was the strange green man with silver hair. He was watching the activity inside the house through binoculars, and chuckled evilly as the two made their way upstairs. He grabbed out a pair of scissors from underneath his scarf, and cut a hole into the dimension, hopping through, before it closed behind him.

~~~~~

The dimension it brought him to was Mewni, but it was much different than where Dreamz lived. He arrived at the tall, grey tower, surrounded by a desolate forest, the tops of the towers spiked and menacing. He arrived, beating on his chest in greeting. "Gilbert, master." He spoke in a thick Russian accent, addressing a horned throne turned away from him, two other strange looking men flanking the throne with weapons. "I've tracked down Dreamz Butterfly. They've hidden her in the Earth dimension unguarded."

"Keskeskeskeskes!" An ugly laugh emitted from the throne, which turned to a reveal a very scrawny looking man. He had white hair and red irises, though the white part of his eyes were actually a sickly yellow. His skin was a pale green as well, and he wore the skull of a horned animal on the top of his head. "Excellent work, Ivan!" He stated in a very shrill voice. "I knew they couldn't hide that brat from me for long. Soon, the wand will be mine. And then, the universe! AND THEN-" He paused, "Actually, the universe should do it." He smiled cruelly. "I'm coming for you, Princess Butterfly..."

~~~~~

Back on Earth, Spencer and Dreamz had arrived in her new room, where Spencer preceded to get shot in the foot by the new litter of puppies. Dreamz looked around at the room pensively, tapping her wand on her chin.

"I can work with this." She decided, before raising her wand, "Sparkle glitter room expand!" She yelled, and in a flash of pink light, a whole tower emerged out of the side of Spencer's house, creating a three story space for Dreamz to call home. It was decorated lavishly, and her bed was now easily triple it's original size. There was a slide spiraling from the top, a balcony, and a mirror on the wall, along with a chest of weapons and armor.

Dreamz smiled while Spencer looked around in amazement. "Woah." He whispered as Dreamz jumped up on her bed, bouncing up and down.

"Ahh, that's better~" She sang.

"I wish I had a room like this." Spencer commented, his lips pulling up into a smile.

Dreamz gasped, jumping down from her bed. "You do?" She inquired excitedly, before taking off out of the room and down the hall to an open door, which she amused was Spencer's room. It wasn't much by Dreamz's standards, but it looked cozy and came complete with a TV, and laptop, and a selection of action figures lining shelves on the wall, as well as Karate posters.

Just as Spencer and the puppies appeared behind Dreamz, she began the spell. "Mystic room suck transform!" She shouted, her wand pointed towards the floor. Instead of making Spencer's room look like it belonged to royalty, a giant black hole appeared in the center of the room, sucking in all of his belongings. It almost sucked Spencer, Dreamz, and the puppies in too, but they managed to shut the door and cut off that gravity to the black hole.

Dreamz looked up at Spencer's nervously. He stared at the ceiling with wide eyes as he leaned against the door, the laser puppies still shooting at his legs every couple seconds. "Suck?! SUCK?!" He demanded, turning angrily to Dreamz. "WHY WAS THE WORD SUCK IN THAT SPELL?"

"I don't know it just came out that way!" Dreamz stated, bouncing around nervously. Spencer groaned and slammed his face into his door. "I'm sorry, Spencer. Uhhh, how about a little sunshine to brighten your day?" She attempted to go back to being cheerful, shooting a spell just above Spencer's head to form a miniature, smiling sun.

Which then transformed into a storm cloud, ringing out thunder as it poured rain onto Spencer.

"I CAN'T TAKE THIS ANYMORE!" He shouted, removing himself from the door and walking away. The storm cloud followed him. "If you're moving in, then I am moving out!" He exclaimed, walking to the window and stepping out of it. In the heat of the moment, it seemed he had forgotten that they were on the second floor, and he fell right into a cactus patch outside his house.

Dreamz rushed to the window, leaning out to see. "Are you okay?"

"Luckily the cacti broke my fall." Spencer said in a gruff, pain filled voice.

"Do you need any help?" Dreamz called down nervously.

"Ow!" Spencer spat, ripping a cactus out of his leg, before looking up at Dreamz in a rage. "I'm fine! Just leave me alone!" He shouted, trudging away with torn pants and one shoe, the rain cloud still pouring water on him.

Dreamz backed away from the window, before coming back to the window sill, torn as to listen to him or offer him help. The laser puppies watched her sadly as she did this another time, before backing away and walking down the hall. She then ran back and looked out the window sill again.

~~~~~

Spencer stood outside the nearest 7-Eleven muttering to himself, the storm cloud still raining on him. "Here he comes, here he comes..." He told himself as a stranger approached to enter the store. "Hey brother do me a solid, refill this for me!" He shouted, waving his empty slurpee cup in the man's face, who then sped inside. "They won't let me back inside because I'm sooooggggggyyyyy." He stated, stomping and swaying in his own personal puddle. The door slid open again as a mother emerged with her son. "Did you get me my refill?" Spencer demanded hopefully.

The mother held her son close to her side as they ran to their car. "Don't make eye contact." She instructed the young one.

Spencer angrily ate his candy bar while simultaneously sucking down the last of his drink. He turned to shout at the lady, "You come to my house, you bring toilet paper!"

When he turned back around, he saw Dreamz standing there sadly, and he jumped, dropping his stuff and putting his arms up in defense. "What are you doing here?" He demanded.

He shielded himself as she lifted her wand, casting a spell which made the rain cloud overhead disperse into hearts and butterflies.

Dreamz put her hand behind her back as Spencer looked at her in angrily. She tapped her face with her wand, looking to the ground sadly. "I didn't get a choice about coming here to Earth, and you didn't get a choice about... Having to deal with me." At that, Spencer's face softened. "I'll... I'll find another family to live with." She stated, and Spencer frowned with regret.

Suddenly, his eyes seemed to lock onto something behind Star, and his eyes widened as he pointed behind her. "Dr-Dreamz..." He stuttered, and she turned to come face to face with a brood of mutants, all growling at her and ready to fight.

"Dreamz Butterfly." Gilbert growled from the front, holding onto a winged black staff. "At last, I've found you!"

"Gilbert." Dreamz sneered. "How did you know I was here?"

He giggled, "Wouldn't you like to know?"

Dreamz nodded. "Yes. That's why I asked."

"Well Ivan- hey! I don't have to tell you anything!" Gilbert shouted angrily. "Get her!"

The mutants let out a war cry. Dreamz got in a fighting stance, but Spencer jumped in front of her. "Hiiiiii-ya!" He yelled, lunging forward and punching the first mutant to charge straight in the gut, before upper-cutting his chin. He jumped up, kicking him in the face, then brought his foot down on his head.

"Wooooah!" Dreamz laughed excitedly. "You can fight?"

"It's called Karate!" Spencer smiled, before chopping someone across the face, knocking them out.

Dreamz rushed forward to the next mutant, knocking his weapon out of his hand and kicking him the gut. The weapon then bashed him on the top of his head and knocked him out. Spencer came flying past screaming, "KA-RA-TEEEE!"

Gilbert grabbed Ivan by the scarf. "You said she was unguarded!" He yelled accusingly. Ivan shrugged as mutants came flying past, blasted by magic.

Spencer tried to chop a mutant upside the head, but his hand ended up between the mutant's two heads instead. They growled, but he knocked his fist back and forth rapidly, hitting them several times.

Dreamz jumped off a car and somersaulted on the pavement, before jumping up and raising her wand. "Rainbow fist punch!" A rainbow stream shot out and knocked the targeted mutant into the car. On the other side of the car, Spencer was cornered by another mutant. He opened the door to the car and the mutant trapped inside came tumbling out, trampling the mutant challenging Spencer.

Dreamz and Spencer were now back to back. Dreamz smacked a mutant upside the head with her wand, while Spencer karate chopped one in the chest, sending him flying. Dreamz shot a magical stream at Gilbert, but he jumped out of the way, and it hit Ivan instead. When he fell to the ground, Gilbert rushed forward angrily. "You're embarrassing me! Get up!" He demanded, pushing a disorientated Ivan to his feet. Ivan then ripped a light post out of the ground and ran at Dreamz.

"Jellybean hallucination mist!" She shouted, shooting Ivan with a blue spell.

"Woah..." Ivan groaned, watching as his hands formed their own faces as jelly beans swirled around him. "What is happening...?" He and his hands muttered.

Dreamz and Spencer smiled at each other, before two more mutants punched them to the ground. They jumped up, kicking them away, before Dreamz waved her wand above her head. "MEGA NARWHAL BLAST!" She shouted, and in a fantastic beam of light, a giant narwhal shot out and crushed the mutants.

Gilbert looked around in horror at his defeated troops. "You want some of this, Gilbert?" Dreamz asked teasingly, standing above Gilbert confidently, her wand still ready to fire.

He huffed, his shoulders drooping. "Noooo..." He sighed, grabbing out his dimensional scissors. "You see, you morons? This is what happens when you don't work out!" He scolded, opening up a dimensional portal. "You're muscles are like pudding! Come on, back in the portal, back in the portal!" He directed as the mutants slowly stepped into the portal. "You even retreat like losers!"

"I'm freaking out!" Ivan muttered as he stepped into the portal, his eyes still wide and dazed.

Gilbert glared at Dreamz and Spencer. "I'll get you Star Butter-" He was cut off as the portal closed around his head. He pulled his head through, losing his skull crown in the process.

"That was amazing!" Spencer breathed. "I was amazing! You were amazing!"

"Yeah, I guess we were." Dreamz shrugged, smiling. Then, her smiled dropped, and her shoulders sagged. "Well... I should probably go pack my bags..." She muttered, walking away.

Spencer rushed after her, placing his hand on her shoulder. "Wait! I don't want to you go! I want you to stay with us!" He said earnestly.

Dreamz turned to Spencer, her eyes sparkling. "Realllyyy?" She squealed. "HUGS!" She shouted, wrapping her arms around Spencer. He glanced at her in surprise, before smiling.

After she let go, they began making their way home. "Are there gonna be mutants attacking us all the time?" He asked excitedly.

"Yeah, probably." Dreamz smiled.

"All right!" Spencer cheered. "Sounds so dangerous- woah!" He said, stopping Dreamz from crossing the street. "Let's cross at the light."

"Okay, wild man." Dreamz teased.