Everyone was still asking Sonic and his friends about themselves. The Dazzlings stood where they were still confused. All they knew was that Sonic and his friends are from another world and that they've been here before.

"Okay, everyone," Sonic said holding his hands out to get everyone to settle down, "Let's ton it down a little bit."

Pinkie then spoke, "Maybe you and your friends can help us against the Dazzlings."

"Um, who are the Dazzlings?" Tails asked.

Pinkie then pointed her finger at Adagio, Aria, and Sonata while she said, "They're the Dazzlings, of course, that's their band name. But they're demons from the pony world who are using mind controlling music on our friends to take over this world."

Sonic looked at the Dazzlings and put his finger on his chin. He then noticed that they were each wearing a red gem necklace. He thought, "Hmm, there's something with those girls for sure."

Sonic then turned back to Pinkie, "Sorry, did you say 'band name', Pinkie?"

Before Pinkie could answer, the main doors to the gym busted open and a voice spoke, "What is going on here?"

Everyone turned and saw two very familiar women at the door, Principle Celestia and Vice Principle Luna.

"Well?" Luna asked looking at everyone.

Celestia then noticed Sonic in the middle of the crowd and smiled, "Sonic. What a surprise."

Sonic only shook his head, "Hey, Principle Celestia."

"What exactly are you doing here? And who are these other students with you?" Luna asked curiously.

"I came here to be with Rainbow, and these are my friends from my world," Sonic answered.

"I see," Celestia said, "Well, since you're here, would you like to cooperate in the Battle of the Band competition?"

"Sorry, um, what is that?" Sonic asked.

Flash then spoke, "It's a competition that's about whose band is the best at making music here at CHS and that kind of stuff."

Sonic thought for a moment, then turned to his Mobian friends, "What do you guys think?"

"You can definitely count me in, bro," Manic said, "I still got my insane drum skills."

"I've learned how to play a piano, so I'm in," Tails said.

"I'm not very good with music," Knuckles said, "But I can use a classic guitar for sure."

"I've learned how to play drums too," Silver said, "So I'm in as well. With two drums sets in one band, we can totally rock things out."

"I think this would be interesting, so I'll play along too," Shadow said.

Sonic nodded, "Well, then we need a name. How about, The Sonic Heroes?"

All of his friends believed that was a good name for their band. Sonic then turned to everyone and said, "We accept the challenge."

This made everyone except the Rainbooms and the Dazzlings think of the same thing. They all wanted their bands and Sonic's as the best.

"I think the Great and Powerful Trixie and The Sonic Heroes are the best already!" Trixie called out first.

Everyone perked up at that. "Whatever, Trixie!" Flash yelled as he grabbed Sonic's wrist and held it up in the air, "No one is gonna beat us! The Sonic Heroes and the Flash Drive are the best at CHS!"

"No, the Crusaders and The Sonic Heroes will win!" Apple Bloom yelled.

Soon, everyone except The Sonic Heroes, the Rainbooms, and the Dazzlings started to argue with each other. Adagio and her sisters smiled as a green mist appeared and slowly transferred itself to the red gems on their necklaces. When they were finished absorbing power, Adagio noticed the Rainbooms weren't under their spell.

"I think we found what we're looking for. Or rather, it found us," Adagio smiled at her sisters, but Sonata didn't understand, "Magic! Don't you see? Everyone else has fallen under our spell, but not these girls. These girls are special."

Adagio and her sisters smirked as they watched the Rainbooms sneak away through the door. Then they saw The Sonic Heroes sneaking out through the door as well.

Aria then said, "Those six boys are special too."

Sonata smiled, "Not to mention cute."

"If we can get their powers, plus the girls' magic, we'll be unstoppable," Adagio said, "Plus, it would be great to have some cute boys like Sonic and his friends as our slaves."

Everyone was so busy arguing and the Dazzlings were too focused on Sonic, no one saw or even knew that two figures were watching them from inside a vent taking their pictures with their phones.

One of the figures leaned towards the other and whispered, "I think they're evil. Just a hunch."

The other replied, "That's kind of obvious. But those teenagers that just left, could it be them? Could they be the reason we're here?"

The fist one said again, "Could be, but I'm not sure."

Meanwhile, outside the front of the school as the sun began to set, Twilight, Sonic, and their friends were thinking about the Dazzlings.

"It doesn't make any sense," Twilight began, "I should have been able to create the spark that would help us break their spell. That's how it worked before."

"But to defeat me, you drew magic from the crown that I was wearing," Sunset said.

Sonic then thought of something, then spoke, "Hmm, the Sirens' magic comes from their music, like you said, right?"

"Yep," Pinkie said.

"Then we should fight fire with fire," Sonic said, "Or in this case, music with music."

Sunset then thought of the same thing, "He's right. So maybe you have to use the same kind of magic to defeat them."

Twilight perked up at that. Then both Sonic and Sunset said, "Or maybe not."

"No," Twilight said, "I think you both are onto something."

"Really?" Sunset asked.

"Hang on," Sonic said as he then turned to the other girls and asked, "It's when you play music that you transform now, right?"

"Yep. Ears. Tails. The whole shebang," Applejack answered.

"So maybe the way to use that magic to defeat the Sirens… is by playing a musical counter-spell," Sonic said.

"You mean like a song?" Fluttershy asked as she flicked her hair.

"Uh-huh," Twilight answered, "And in order to free everyone who's been exposed to the Sirens' spell, we'll need them all to hear it."

"Hmm…" Everyone pondered.

Then Rarity stood up and gasped as she remembered something, "The band competition! That's the next time we can be certain everyone will be in the same place at the same time."

"Guess the Rainbooms are the band to beat," Applejack said.

"Um, not to be rude or anything like that, but won't you need help from The Sonic Heroes?" Knuckles asked.

"And the Sonic Heroes, of course," Applejack added.

"And I believe you, Twilight, just became the Rainbooms' newest member," Rarity said.

All the girls made excited giggles while Sunset just stayed where she was feeling sad. Then she felt a hand touching her shoulder. She looked and saw Shadow who was looking a little worried.

"Are you feeling all right, Sunset?" Shadow asked.

"I'm fine, thanks," Sunset said still feeling a little upset.

Shadow looked at Sunset's hand. Then he thought for a moment and placed his hand on hers. Sunset felt the touch and looked at Shadow.

"Hey, I'm here if you need help," Shadow smiled.

Sunset couldn't help but smile and blush at how nice Shadow was, "Thank you, Shadow."

Back to the others, Pinkie then popped up and said, "So… what do you want to play?"

She then ran off and returned with different instruments. First, with a triangle, "Triangle?"

Next, a sousaphone and blew into it, "Sousaphone?"

Now, a Theremin, "Theremin?" and made eerie notes, "So magical."

"I might take a little too long to learn how to play something with these," Twilight said holding out her hands.

"Let me guess, still not quite used to the whole hand thing?" Sonic asked.

Twilight nodded and said, "I'll just sing."

Rainbow just instantly appeared right beside Twilight and asked, "Like, as in lead singer? 'Cause that's usually my gig. This being my band and all."

"It's our band," Applejack said, "And of course as lead singer. She's the one with the magical know-how to help us pull this thing off."

"OK. Yeah. That's cool," Rainbow said, "I'll just use this as a chance to hone my already insanely good lead guitar skills."

Sonic couldn't help but smile, making Rainbow blush.

"It's only temporary," Twilight said, "And we don't need to win the Battle of the Bands. We just have to perform during the first round of the competition."

"So let's get to learning that musical counter-spell!" Rainbow said excitedly.

Twilight frowned, "Well, that's just it. I don't know any."

All the other girls groaned. "And unfortunately, neither of us know one either," Tails said.

"But I'm sure I could figure out how to write one," Twilight suggested.

"Totally!" Spike said, "Twilight can write a spell like it's nobody's business. That's pretty much how she got to become a princess in Equestria."

"Technically, I helped finish a spell," Twilight added, "And there was a little more to it than that, Spike."

"Yeah, whatever," Spike replied.

"Wow, a talking dog," Silver said amazed as he lowered himself to Spike.

"You're not surprised?" Spike asked disappointed.

"I'm a talking hedgehog where I'm from after all," Silver said as he then scratched Spike's ear.

Spike tensed up for a second, but then relaxed and waged his tail as he enjoyed the scratching, "Oh, yeah. That… feels… good."

"I've got this. Come on," Twilight said as she picked up Spike and walked towards the school with Sonic and his friends.

"Where you all goin'?" Applejack asked.

"Well, the last time we were here, we spent the night in the library," Sonic said, "Besides, there isn't really a place for me and my friends to stay."

"Are you crazy?" Pinkie said as she then suddenly hugged Twilight tightly, "We're besties now! Slumber party at my house!"

All the girls were excited. Sonic and his friends then continued to walk into the school until Pinkie stopped them, "You guys too!"

THAT made Sonic and his friends feel a little uncomfortable. "Uh, slumber parties are more of a… girl thing," Sonic said.

"Plus, do you think it would be okay with your folks?" Knuckles asked.

"It's just me and my sister, so it's ok," Pinkie said, "Plus, Sonic, you get to be with Rainbow."

"All right, then," Sonic said.

Later, at Pinkie's house, everyone were wearing their own kinds of pajamas and doing their own things. Sonic and Rainbow were playing a video game while Knuckles and Applejack were watching. Pinkie and Manic were Pinkie's laptop. Fluttershy and Tails were playing with Spike. Silver, Rarity, and Sunset were looking at stuff on Rarity's phone. And Twilight was working on the counter-spell with Shadow helping her.

"Status update: Okie-dokie-lokie!" Pinkie said as she tapped the keys on her keyboard, and then looked at Manic who was smiling at her, and she blushed and added, "And meet a really nice boy!"

"Hehe, you're too funny, Pinkie," Manic said.

Rarity set up her phone and took a selfie with Sunset, Fluttershy, and surprisingly Tails and Silver. Once she took the picture, she saw that Spike had made a funny face in it and she and Silver glared annoyingly at him while Tails, Fluttershy, and Sunset snickered.

Sonic and Rainbow were playing a racing game and were on the final lap. Sonic's player was behind Rainbow's and he gave an annoyed face. Rainbow smirked as her player was right near the finish line when Sonic's player had just rushed past hers and crossed the finish line.

Rainbow was slack-jawed that she was beaten by the last second. Sonic smiled sheepishly, "Sorry, Rainbow."

Rainbow then only smiled. "It's cool, blue blur," she said as she put her hands on Sonic's cheeks and gave him a kiss on his lips, which he returned.

Knuckles and Applejack couldn't help but smile. Rainbow then turned to Twilight and Shadow and asked, "So, Twilight and Shadow, how's that counter-spell coming?"

"Huh? Oh, good. Great," Twilight said flipping the pages of her book, "Shadow?"

"It's getting there," Shadow said not looking away from his book.

Twilight then turned to Fluttershy, "Thanks for letting me use your notebook, Fluttershy. I really like the song you wrote for the Rainbooms."

"Thanks," Fluttershy said, then sighed, "Hopefully one day, we'll get a chance to play it."

"I'm sure you will," Tails said reassuringly.

Fluttershy blushed but smiled at him. Then both she and Tails looked and saw Rainbow laughing mockingly and holding a controller in the air preventing Applejack from grabbing it. Sonic and Knuckles face palmed at the silliness.

"Hey!" Applejack yelled trying to reach the controller while Rainbow just kept laughing.

Rarity then sat next to Twilight on the bed, "Twilight, I think I speak for all of us when I say, I don't know what we would have done if you hadn't come back to help us."

"Uh-huh," all the other girls said.

"And I'm sure we would be having a lot of trouble without you and your friends, Sonic," Twilight said.

"Hey, no problem," Sonic smiled, "Besides, it'll be fun to cooperate in the competition."

Then they all heard the doorbell ring. Pinkie stood up and said, "Pizza's here!"

Sonic then quickly stood up and said, "Last one there has to pay for it!"

Everyone whooshed out of the room, everyone, except Twilight and Shadow. They looked at their notebooks and saw what they had really written. Twilight's was showing a mess while Shadow's had not a word.

"Sorry, Twilight," Shadow said.

"It's fine, Shadow," Twilight said, "I'll think of something."

Then Pinkie came back with a slice of pizza hanging by the crust in her mouth, "Don't you guys want your pizza?"

Twilight and Shadow nodded. Pinkie then went back downstairs with Shadow following. Twilight then put her notebook in Pinkie's desk and left the room. But she didn't notice those two mysterious teenagers from earlier were watching through the window, then sneak away.

Later, while everyone else was asleep, Twilight was still awake. She looked around and saw all her friends sleeping and murmuring softly. Sonic and Rainbow were sleeping together in Pinkie's bed. Pinkie was in her sleeping bag beside Manic. Knuckles was beside Applejack. Shadow was right next to Sunset. Silver was near Rarity, and Tails was right beside Fluttershy who had Spike in her arms.

Twilight quietly got up out of her sleeping bag, carefully snuck around the others, grabbed her notebook, and went downstairs to work.

She had the pan in her mouth and wrote in her notebook. When she finished, she then shook her head and spit the pen out of her mouth sighing, "No. That's not going to work."

She rubber her eyes until she heard a voice, "Hey, Twilight."

Twilight looked up and saw Sunset standing against the wall, "You're up late."

Twilight quickly hid her work before Sunset could even see it, "Just looking over the counter-spell. We only get one shot at this. It has to be perfect."

"That may be true, but you still need to rest," said a voice.

Twilight and Sunset turned and saw Shadow shirtless. Sunset looked at his strong body and blushed madly for a moment, "Oh, uh, hey, Shadow. What are you doing up?"

"We couldn't sleep," Shadow said, "So we just decided to grab some water."

"We?" Twilight asked.

"Yep, him and me," said another voice.

Twilight and Sunset then saw Sonic who was also shirtless. "Sorry, Shadow and I got a little too warm with our shirts on."

"We really are lucky you're here," Sunset smiled at Twilight and the boys as she opened the fridge.

"That's what everyone keeps telling me," Twilight said.

Sunset looked in the fridge and saw countless amounts of whipped cream everywhere inside it, "Who could possibly need this much whipped cream?"

"Possibly Pinkie Pie," Sonic guessed as he and Shadow both grabbed a glass of water.

"Must be nice to have everyone always looking to you for answers to their problems," Sunset said to Twilight as she picked up one of the whipped cream cans and sprayed some whipped cream onto her thumb, "Instead of waiting for you to cause a problem."

"Just because everyone expects something from you, doesn't mean it's guaranteed to happen," Twilight said.

"But that doesn't stop you from expecting it," Shadow replied.

"Which only makes things harder because the last thing you want to do is…" Sonic started.

"Let everybody down," all four of them said.

They all looked at each other and then smiled. When Sunset closed the fridge, she saw Pinkie's sister Maud Pie and gasped, "AAAHH!" Her sudden jump surprised and nearly caused Sonic and Shadow to drop their glasses of water on the floor and spill their water.

Maud raised a small rock in her hand and said in a flat tone of voice, "Boulder was hungry."

She opened up a cubert and took out a box of crackers. She then dumped them onto the rock; which fell onto the floor. Sunset, Shadow, and Sonic stepped back and Maud walked back to her room still dumping crackers on the floor.

Sunset whispered to the others, "I still can't get over the fact that she's related to Pinkie Pie."

"You and me both," Twilight said as she and Sunset smiled.

"Same here with me and Shadow," Sonic said.

Sunset gave a yawn as she began to walk away, "Better get some sleep. Good luck with the counter-spell. Not that you'll need it. This must be nothing compared to the stuff you're expected to deal with as a Princess in Equestria."

Twilight then said, "Sunset Shimmer?"

Sunset turned to Twilight. Twilight had her mouth opened for a second, until she said, "Never mind. It's not important."

Sunset gave a smile. She then felt a hand touching hers. She turned and saw Shadow who was holding her hand, which made her blush.

"Come on, Sunset. Let's go," Shadow said smiling.

Sunset smiled, "Okay."

Shadow and Sunset walked back to the room. Twilight and Sonic stood where they were. Twilight slightly turned away and said to herself, "No. I have to be able to do this. I have to."

"You will," Sonic said reassuringly, "I believe in you."

Twilight smiled at Sonic. Sonic smiled back. But then Sonic felt some kind of pain in his head as he dropped to his knees. Twilight gasped as she quickly ran over to Sonic.

"Sonic, what's wrong? Are you okay?" Twilight asked worried.

"I… I'm fine," Sonic said as he stood up, "Maybe I should head to bed."

Sonic began to walk away, but thought in his mind, "What in the world was that I just felt? I felt like… Chaos energy, but… it felt… dark and evil. And it felt… very, VERY familiar…"

Later that night, when everyone was asleep, in the city, a red blur was whooshing past buildings. As it did, it said in its mind in a demonic voice, "I know you're here, Sonic the Hedgehog, and you did not come alone. You can try to hide from me… but I am the fastest thing alive."

When the red blur ran up a building and stopped on the corner on the top, its appearance was shown. It was in the body of Sonic, but his looks were different and scary. His hair was blue like Sonic's, but it had blood red streaks. His clothing was the same, but it all had looks of blood splattered all over. His gloves and sports tape showed multiple rips while he had demonic claws. His teeth were sharp and pointy, and his eyes were completely blackened with blood red glowing irises.

"I will scour this planet until I hunt you down, and when I do, you and your pathetic Mobians will feel my wrath," the figure said to himself, "And I will make sure you suffer as much as you made me suffer for all of these years."

The figure then felt some kind of power. He looked down and saw three girls walking down the sidewalk. He then smiled evilly, "Interesting."

The Dazzlings were talking about Sonic and his friends. Adagio said, "So it would seem that Sonic and his friends aren't from Equestria. They're from another world of power."

"If we get their powers, they'll be ours," Aria said smirking.

"But the question is, who gets who?" Sonata asked, "There's three of us, and six of them. Of course we can each have two of them, but who can we each have?"

"That we can think about later," Adagio said.

"Well, well, well… looks like I'm not the only one who wants to get Sonic," someone said in a demonic voice.

"Huh? Who's there?" Adagio asked.

"Don't fear me, my friends," the voice said, "I am not here to harm you."

The Dazzlings saw two glowing red irises in the dark. "Who the heck are you?" Sonata asked.

The figure stepped out of the darkness. The Dazzlings jumped back a little scared. "I understand you are afraid of me, but I am not here to hurt you. Who I want to hurt is that pathetic Sonic."

"Who are you?" Adagio asked.

"I used to go by the name Sonic EXE, but… you can call me Darkness, and I want Sonic to suffer," the figure answered crossing his arms.

"What has he done to you?" Aria asked.

"He thought that he had destroyed me years ago, but I was sent to this world and was trapped in the ground until Sonic and his friends came here today," Darkness explained, "But since you three want him, I will make you a deal."

"Which is?" Sonata asked.

"Help me capture my doppelganger and his friends, I get their powers, and you three can play with them as you wish," Darkness said.

"How is Sonic your doppelganger?" Sonata asked.

"Before I was sent here, my spirit was controlling Sonic, making him slaughter his own friends, but I was defeated by Kyo the Lion-Hedgehog," Darkness said, "When Sonic and his friends arrived, I managed to find my way out of the ground and form a body of my own. Even though Kyo freed Sonic from me, my spirit still had a small bit of his blood."

Adagio thought for a moment, and then said, "If we help you, then you need to help us with something."

"And what would that be?" Darkness asked.

"Help me and my sisters get the negativity and distrust from everyone in the world so they can adore us," Adagio answered.

Darkness smiled evilly, "Very well," he said chuckling as he was then covered in back-red energy and disappeared into thin air.

"Do you think we can trust him?" Sonata asked.

"We have his word, and he has ours," Adagio answered smirking evilly, "If he's willing to help us and let us play with Sonic and his friends, then we can help him."

Up from above, at the top of a building, those teenagers were on it again. The moonlight shined on them. They're appearances were shown. They were both boys.

One of them had macaroon tan skin, bright sapphire blue hair with diamond red highlights, and cerulean blue eyes. He was wearing an unzipped navy blue short sleeve hoodie with light blue lightning detail. Under the hoodie was a stone grey shirt with the symbol of a sky blue ring and lightning bolt on the chest. His lower half contained azure blue sweatpants with pure white streaks, and he had gold parkour shoes with ruby red and cloud white streaks and detail on his feet. For accessories, he had lapis blue speed glasses in his hair, a denim blue bandana around his neck, white fingerless gloves with teal blue and gold yellow sports tape, and a ruby red wristband on each wrist. He looked a lot like Sonic.

The other boy had pure white skin, pure black hair and sky blue eyes. He was wearing a ghost white overcoat with a hood, as well as a stone grey shirt with what looked like black discs. His pants were ghost white sweatpants, and his shoes were high-tech looking. For accessories, he had what looked like a mask under his hood, and black fingerless gloves with dials on them.

The blue-and-red-haired boy said to the black, "Yep. They're the bad guys, Specter."

"It really took you that long to figure it out, Strike?" Specter asked.

"Well, you didn't know either," Strike said with his arms crossed.