My Little Pony Equestria Girls: Monster Mash-Up Musical

Cut to the Canterlot Planetarium at morning. Flash, Vinyl, and Derpy head inside. The interior is still all-out decorated for Halloween. They’re astounded by the decorations.

"Flash, Vinyl, are you sure we should be doing this?" Derpy asked with concern.

"Well, I thought we might as well have a look at the transformation chamber the girls told us about." Flash answered.

"And I just wanted to see if Sarah Scientist found out anything about the Gold Disk of Lycidias and the Zodiac Stone." Vinyl considered. "Besides, she did let them go on an adventure to find the stone."

They share an agreeing look, then head deeper into the Planetarium. In her lab, Sarah tests out vials of different colored liquid. She takes out a dropper and uses it in the vial of teal liquid. She lets a drop fall into the vial of magenta liquid, and it becomes lime green with dry ice vapor. Sarah smiles to herself. Flash, Vinyl, and Derpy head in and spot the scientist at work. Vinyl takes off her shades then knocks on the already open lab door, getting Sarah’s attention.

"Oh. Hello." Sarah said with a friendly smile. "Can I help you?"

"Hey. Uh, Sarah Scientist, right?" Flash asked. Sarah nods, answering his question. "We’re friends of the Rainbooms. We heard you use a transformation chamber to turn them into real monsters."

"You heard right." Sarah said, pointing towards the chamber, which is a bit further in the lab. "Did they show you their new monster forms?" She asked.

"They did." Vinyl said with confirmation. "We also heard you told them the story about the Zodiac Stone. And now they’re on a quest to go find it." She added.

"Yep. They volunteered to go find it." Sarah said nicely. "But don’t worry; I told them about the stone, I told them about the disk, I told them about the curse..." Wait! What did she just say?! The aghast scientist gasps loudly, getting off her stool. "I FORGOT TO TELL THEM ABOUT THE CURSE!!!"

"CURSE?!" Flash, Vinyl, and Derpy yelled with full-blown panic.

"THERE'S A CURSE?!" Derpy asked in horror.

"Oh no! What have I done?!" Sarah said to herself. "Your friends are in BIG danger!" She said to the trio. "But I know how to help! Follow me!" They follow Sarah further into the lab.

"This is terrible!" Vinyl said, aghast. "My book about the Zodiac Stone didn’t say anything about a curse!"

"Well, it looks like we’re about to find out what it does." Flash stated.

At a park, Arthur and Winston sit on either side of a picnic bench, facing each other.

"Wait a minute! The Zodiac Stone has a curse?" Winston asked with fear. "That does not sound good!"

"Yeah, sorry for not bringing that up earlier, Winston." Arthur said apologetically. "I guess I should have told you when I started telling you the story."

Back in the lab, Sarah leads the trio to a projector facing a white board.

"I’ve got a few images of the Zodiac Stone’s capabilities and put them in a slideshow." Sarah said.

"Perfect. This should give us some info about the curse." Flash stated.

"Yeah, but what does the curse do?" Vinyl asked with concern.

"Good question, DJ." Sarah said. "It’s a guardian curse." She turns the projector on and it projects images of the Zodiac Stone and a large red ghostly dragon, the slides even show the dragon wreaking havoc on a city. Sarah told them the tell while showing them. "Years ago, the Great Lycidias put the Zodiac Stone inside its tomb and cursed it, so that if anyone takes it from its resting place, the curse will rise up and take the form of a terrifying beast, and battle whoever took the stone!"

"And Twilight and the girls are somewhere out there trying to find it!" Flash said fearfully.

"So if they take the stone, they’ll unleash the curse that protects it by turning into a gigantic red ghost dragon?!" Vinyl asked in terror.

"You got it." Sarah admitted. "But don’t worry, I do know the ingredients for a serum that can break any curse. This is the perfect opportunity to try out my giant syringe." She holds up a huge syringe, the size of a pogo stick. Flash, Vinyl, and Derpy stare at the oversized injector. Sarah puts the syringe on the table the projector is on, turns the projector off, then faces the trio curiously. "So, do any of you know anyone who knows a bit about curses?" She asked.

Flash, Vinyl, and Derpy look at one another in thought, then get an idea that even they don’t like. But they had no choice. They had to do it to save Twilight and the Rainbooms. They sigh in resentment, then turn back to Sarah.

"Well, there are 3 people we know." Vinyl said, flustered.

Later that morning, Flash, Vinyl, and Derpy arrive at a suburban house, their faces etched with determination. Inside the house, the interior is dark and decorated with Halloween decor, including creepy fog on the floor at knee-high level created by a fog machine, the Dazzlings start appearing out of the mist. Adagio Dazzle comes down from the staircase, Aria Blaze comes from the living room, and Sonata Dusk comes out of the kitchen. As they stand in their foyer, Flash, Vinyl, and Derpy watch through their window by the front door, with suspicious but curious looks on their faces. Wearing the hoodies they wore at the cafe during their debut in “Rainbow Rocks”, they start singing a spooky jazz funk song around their house, including their front yard and the backyard. They may have permanently lost their ability to manipulate people into being hateful and competitive, but they can still sing.

ADAGIO DAZZLE:
What's that just around the corner?

SONATA DUSK:
Something in the rocks and trees.

ADAGIO DAZZLE:
Slowly, slowly getting closer.

ARIA BLAZE:
Makes you want to gasp and freeze.

THE DAZZLINGS:
Monsters everywhere, hiding in the trees!
Just behind the rocks, blowing in the breeze!
Monsters everywhere, doing as they please!
They try to scare you!

(Flash, Vinyl, and Derpy creep in through the front door, while still listening to the song without the Dazzlings seeing them.)

ADAGIO DAZZLE:
Is your air getting colder

ARIA BLAZE:
As you slowly walk around?

ADAGIO DAZZLE:
Must be brave, you must be bolder.

SONATA DUSK:
It's no more than silly sounds!

THE DAZZLINGS:
Monsters everywhere, hiding in the trees!
Just behind the rocks, blowing in the breeze!
Monsters everywhere, doing as they please!
They try to scare you!

(The Dazzlings head outside in the backyard, and animated eyes, dinosaur footprints, ghosts, spiders, and bats)

ADAGIO DAZZLE:
Look out! Look out! They're all about!

SONATA DUSK and ARIA BLAZE:
Where?

ADAGIO DAZZLE:
Look out! Look out! They're all about!

SONATA DUSK and ARIA BLAZE:
Where?

ADAGIO DAZZLE:
Look out! Look out! They're all about!

SONATA DUSK and ARIA BLAZE:
Where?!

(They spot a squirrel popping out of a nearby bush.)

ADAGIO DAZZLE (speaking):
Oh, that's not so scary.

(The Dazzlings continue with their song.)

THE DAZZLINGS:
Monsters everywhere, hiding in the trees!
Just behind the rocks, blowing in the breeze!
Monsters everywhere, doing as they please!
They try to scare you!
Monsters everywhere, hiding in the trees!
Just behind the rocks, blowing in the breeze!
Monsters everywhere, doing as they please!
They try to scare you!

At the end of the song, the Dazzlings strike a pose as the dark and spooky background morphs into their front yard. Suddenly, the Dazzlings are startled by a clattering sound. They spot Flash, Vinyl, and Derpy by the front stoop of their porch. The sound is revealed to have come from Derpy, who had accidentally tripped into 3 empty trash cans. Flash and Vinyl help their cross-eyed friend up. She has a trash can on her head.

"I meant to do that." Derpy said innocently.

"Well, well, well." Adagio said mockingly. "If it isn’t 3 of our old, uh..." She uses finger quotes "'classmates' from Canterlot High."

"Mm-hmm. So, we meet again." Vinyl said bravely.

"Oh. DJ Pon-3." Aria said coldly. "I see you’re finally talking."

Flash, Vinyl, and Derpy share a look of annoyance.

"Uh... so, what are you 3 doing here?" Sonata ask curiously and strangely politly.

Taking a deep breath, Flash decided to cut straight to the chase. "Okay, well, I know this doesn’t sound... appropriate for you, especially from your old enemies... but we need your help," he admitted.

"Help?" she asks with amusement. "Oh, huh. Yeah, okay. What do you need help with? Setting up a stage for one of your ‘songs’ at Canterlot High? Because if so, we’re out." Adagio, Sonata, and Aria start to head for their house.

“No, it’s nothing to do with music,” Derpy said earnestly. “Twilight, Sunset, and the Rainbooms have turned into real monsters for Halloween, and they’ve gone looking for a magic object called the Zodiac Stone.”

The Dazzlings gaze at them, then begin to head up the porch.

"Find someone else." Adagio said nonchalantly as she, Sonata, and Aria turn their backs on them.

"But, girls, that stone also has a curse," Vinyl blurted out.

The Dazzlings stop upon hearing the word “curse”, then turn back to Flash, Vinyl, and Derpy. Our view zooms in on their surprised faces.

"What?" The Dazzlings exclaimed in shock.

"Did you say... 'curse'?" Sonata asked with wide eyes.

Flash, Vinyl, and Derpy share a look of concern.

Back at the lab in the Planetarium, Sarah fidgets at her desk, tapping her fingers on its hard surface, waiting anxiously for the trio to come back. Flash, Vinyl, and Derpy arrive with the Dazzlings.

"We’re back." Vinyl called out.

Sarah turns around, surprised to see that they brought the Dazzlings with them.

"What the--?" Sarah stuttered. "The Dazzlings? But why would you bring them--?" Sarah asked. Vinyl raises an eyebrow and Sarah's eyes widen. "Oh. Because they cursed Canterlot High with their music once and therefore, you thought they might know a little bit about the curse of the Zodiac Stone?" She asked. Flash and Vinyl nod. "Huh. Now why didn’t I think about that?"

A little bit later, Sarah shows the Dazzlings her slideshow about the Zodiac Stone’s curse to the wide-eyed Dazzlings.

"A guardian curse? Oh. Creepy!" Aria shivered.

Sonata begins hyperventilating "I can’t... Oh my... A curse..." Adagio comforts her. "I... I can’t breathe."

Sarah steps up. "So I need to make an anti-curse serum for my giant syringe and use it on that big phantom lizard. But the only problem is... I don’t know where to inject it." She admitted.

Adagio steps up to the image of the red ghost dragon. "Well, all curses have a source." She says as she points to a glowing sphere in the dragon’s center. "The center of its capabilities. So, if you inject the beast’s center with the syringe, that will break the curse."

"The center of its power." Sarah gasped. "Of course, it’s so obvious now." She glanced around at Flash, Vinyl, Derpy, and the Dazzlings, who all stare at her intently. "Alright, people. Let’s get to work."

As Sarah led the way into the lab, ready to concoct the anti-curse serum, Flash, Vinyl, and Derpy turned to the Dazzlings, their expressions hardening.

"Now, remember, Dazzlings." Vinyl said bravely "Don't try anything funny. We’ll be watching you." Flash and Derpy nod in agreement. The Dazzlings look with annoyance at each other, then turn to the 3 students of Canterlot High.

"I’m shaking in my boots, DJ." Adagio said with a bored expression.

And with that, they all follow Sarah into the lab, ready to work on the anti-curse serum for the curse of the Zodiac Stone.