(NEXT DAY, MORNING)
"Sonic! Sonic!" Sonic waked.
"Huh?[Yawns] What is it, Cinos?" Sonic asked.
"You still insist in calling me that?" Cinos asked.
"You said you was part of me, so my inverted name sounded good. But why you waked me up?" He asked.
"Somepony was here yesterday. And before you say something, I tried to wake you up, but you was sleeping like a rock." Cinos said.
"Do you know what they wanted?" Sonic asked.
"No. He just appeared here, looked to you, then leaved. I heard some sounds outside, then a voice saying about a 'special place', but when I looked outside, I found nothing there." He said.
"Do you think we should tell aunt Luna?" Sonic asked.
"No. I think we should investigate, like detectives." Cinos said, excited.
"Sounds fun. But where should we start?" Sonic asked.
"Let's have a look around the castle, I did heard some sounds down there before that yellow unicorn came." Cinos said, pointing to the window.
"But how we will pass aunt Luna? She said to not leave the castle." Sonic said.
"She is at aunt Celestia's room, remember? We just have to keep a low profile and she won't know we leaved." Cinos said.
"Ok. Let's go." Sonic went to the hallway. He noticed something on the ground. "What this?" He asked as Cinos looked to the ground and saw some drops of blood on the ground.
"I think it's blood." Cinos said.
"Do you think it's from that unicorn?" Sonic asked.
"Don't know, but we should leave before someone came here." Cinos said. Sonic nodded and went to the stairs.
(WITH TWILIGHT)
Twilight wake up only to see nothing but darkness around her, she lit up her horn and saw she was in somewhere like a cave. "Hello?" She said, her voice echoing through the cave.
She get up and went to one of the wall and saw her reflexe, "Is anypony here?" She asked again, only to heard a faint evil laugh that was getting louder, scaring her.
"Where am I?" Twilight asked, noticing the reflexe of her changing to Cadenza's image.
"The caves benearth Canterlot. Once home to greedy unicorns who wanted to claim the gems that could be found inside." She said, her image desappearing.
Twilight went back, only to find another wall, that appeared Cadenza's image again. "And now... It's your prison." She said, looking at Twilight.
"Help! Help!" Twilight shouted as she runned to another corner.
[Evil laughs] "It's no use. No pony will heard or ever think look for you either. Most ponies have forgotten that these caves even exist. Which is why they are the ideal place to keep the ones who try to interfere with my plans.[Evil laughs]" Cadenza's image refleted through some of the walls while she laughed.
"Plans? What plans?" Twilight asked.
Cadenza stop laughing as she looked to Twilight, "The plans I have for your brother of course." She said as if was obviously.
"Don't you dare do anything to my brother, you-you monster!" Twilight said as she charged her horn.
"Only way to stop me is to catch me." She taunted Twilight, she laughed again. Her image begin appearing in different walls as Twilight fired nonstop at her image.
Until Twilight exploded one of the walls, revealing Cadence herself. She was covered in bruises. "T- Twilight?" She asked, then noticed her expression, and her charged horn. "W-wait!" Twilight jumpped on her, glaring at her. "Please. Don't hurt me. Twilight it's me." She said, but Twilight just glared at her. Please. You have to believe me. I've been imprisioned like you. The Cadence who brought you down here was an imposter." She said.
"Likely story!" Twilight said, then Cadence begin singing the same playsong they singed in her flashback.
Twilight begin smiling, "You remember me!" She hugged Cadence.
"Of course I do. How could I forget the filly I love to babysit for the most?" Cadence said, then they heard the same evil laughter from before, and notice a shine from a tunel.
"We have to get out of here. And we have to stop her!" Twilight said, leading the way through the tunel.
(WITH SONIC, AT THE GARDEN OF THE CASTLE)
"Wow. I didn't notice that pink bubble before." Sonic said, pointing to the barrier.
"Sonic, focus. We can worry about that strange bubble later. Now we search for clues." Cinos said as he looked around the garden.
"You mean that hole?" Sonic asked, pointing to a hole on the ground next to them.
"How didn't I notice that?" Cinos asked as he checked it.
"Found something?" Sonic asked.
"Seems like a cave, but I'm not sure." Cinos said, looking through it.
"Let me see." Sonic went to look, but as he approuch it, the hole begin cracking, and collapse, making Sonic fall inside it. "AHH!" He screamed as Cinos look helpless to him, then winced as he saw Sonic crash on the ground.
"You okay?" He asked as he jumped down.
"Ouch. That hurted." Sonic said as he get up, then looked to the ceeling of the cave. "How we get back now?" He asked.
"We should look for an exit, maybe we will find something here too." Cinos said,leading the way. Sonic nodded, following him.
They walked for 10 minutes but found nothing but darkness. "We'll find nothing in this darkness." Sonic said.
"It's not like we can just leave this place if we want, we need to look for the exit. Once we find it, we can bring a light source to search, later." Cinos said.
[Sighs] "If we ever find the exit, that is." Sonic said, feeling sad.
"Come on, now. The last thing we need is to lose hope. Look we'll find the exit, I promise you that." Cinos said, looking at Sonic in the eye.
"Ok." They continued for more 10 minutes, then finally found something, or raither, somepony.
"That's him! He's the unicorn from yesterday!" Cinos said as he went to Tails, who was unconsious on the ground.
"Is he...?" Sonic didn't finished but Cinos get what he mean.
"No. His head is bleeding but he is breathing, so he still alive." Cinos then looked to Sonic. "We need to find help for him. And fast." He said.
"But we didn't even find the exit yet. How we could even find help here?" Sonic asked.
"I don't know, we sho-." They heard some voices near them.
"You heard that?" Sonic whispered to him.
"Yes. And you should just mentally talk with me near them." Cinos said.
"Why?" Sonic whispered.
"So they won't think you're crazy." Cinos said.
"Okay." Sonic said. 'Should we ask if they can help us?' He asked, mentally.
"Yes. They could be that unicorn last hope of survival." Cinos said.
Sonic nodded as he went to the voices direction, he then saw a light coming from a corner, he glanced and saw to ponies walking through the cave. 'Her goes nothing.' He went to them.
"Hey, please we need help!" Sonic said as he approuched them.
"Huh? What that cub doing here?" Cadence asked as they went to Sonic.
"That monster send even a child here? Grr." Twilight growled.
"Uh." Sonic was getting unconfortable now.
"Sonic, That unicorn need help!" Cinos remind him.
"Oh, right! Please you need to help us!" Sonic said.
"Hey, calm down, there's more with you?" Cadence asked him.
"Yes. His head is bleeding! Come on!" Sonic then went back from where he came, the girls following him.
[Gasps] "Tails!" Twilight instantly went to Tails side.
"His your friend?" Sonic asked her.
"My boyfriend." Twilight said as she hugged Tails's unconsious body.
Cadence gasp, then she tried to charge her horn but she just managed to shot some sparks from it. "Twilight, let's combine our magics, I'm to weak now to heal him alone, but if you help me, maybe we can heal him." Cadence said.
"Okay." She put Tails down and went to her side, she then begin charging her horn, then she aim it in Cadnce's direction. Cadence's horn begin glowing pink, then she touched Tails head, Tails's body glowed pik then went back to normal as Cadence went back a little.
"Ugh." Tails opened his eyes, and saw Twilight, who was hugging him.
"Tails. Thanks goodness!" She was crying at this point.
"Hey, Twilight. What's wrong?" Tails asked, then noticed the surroundings. "Where are we?" He asked.
"We are at a cave system benearth Canterlot." Twilight said, letting go of him.
"Do we know where to go?" Tails asked.
"No. We have been walking around this place for almost a hour, now." Cadence said. She then looked to Sonic. "Until this filly found us, saying someone was bleeding. If it wasn't for him, maybe we couldn't even find you." She said.
Tails looked to him, "Wait... Wasn't you the kid at the castle?" Tails asked him.
"Yes. You invaded my room." Sonic said.
"Your room?" Twilight asked.
"Yes. Aunt Luna and aunt Celestia say that's my room." Sonic said.
"I through that only Prince Blueblood as Celestia's nephew." Twilight said.
"Look, we can wonder about that later. Now we have a marriage to stop." Cadence said.
"You mean the marriage that is happening now at the castle?" Sonic asked.
"Is already happening?!" Cadence asked.
"Aunt Celestia said that the princess want to marry sooner, for some reason." Sonic said.
"Then we need to find a exit, soon." Twilight said.
"We- I mean I- know where has a hole on the ceeling, but I can't fly over it." Sonic said.
"Lead us there, I can fly us all to it." Tails said, following Sonic as he went back from where he fall, the girls right behind them.
(AT THE BALLROOM, MARRIAGE)
"Mares and gentlecolts, we are gathered here today to witness the union of princess Mi Amore Cadenza and Shining Armor." Celestia said.
"Shining Armor, do you accept princess Mi Amore Cadenza as your wife?" Celestia asked.
"I do." He said, flatly. Some of the guests looked at each other.
"And you, princess Mi Amore, do you accept Shining Armor as your husband?" Celestia asked.
"I do." She said, happy.
"Then it is with great pleasure to pronounce you-.", "STOP!" Twilight shouted as she slams open the door, Tails at her side.
[The guests begin murmuring] Rarity just facehoofed as Rainbow and Applejack looked at each other worried, Spike just looked down.
"Ugh! Wy does she have to be so possessive of her brother?" Cadenza asked angrily, then noticed Celestia and Shining looking at her. She fake cried. "Why does she have to ruin my special day?" She asked.
"Because it's not your special day, it's mine!" Cadence said as she went to Twilight's side, with Sonic on her back. Everyone gasped.
'What's Sonic doing on her back?' Celestia wondered.
"What? But how did you escape my bridemaids?" Cadenza asked.
"Cadence just levitated a bouquet of flowers then thrown it far from us, they just went after it." Tails answered. Sonic climb down Cadence's back.
"Clever, but you're still too late." Cadenza said.
"I don't understand. How can there be two of them?" Applejack asked.
"She's a changeling." Cadence said, taking some steps close. "She takes the form of some pony you love and gains power by feeding off your love for them." Cadence said as 'Cadenza' eyes glowed green, then a circle of green flames surrounded her then shoted high, she then turned oto her true form.
"Right you are, princess. And as queen of the changelings, it is up to me to find food for my subjects. Equestria has more love than any place I've ever encountered. My fellow changelings will be able to devour so much of it that we will gain more power than we have ever dreamed off!" She said as she went to Cadence.
"They'll never get the chance. Shining Armor's protection spell will keep them from ever even reaching us." Cadence said.
[sneckering] "Oh, I doubt that. Isn't that right, dear?" She asked Shining Armor, her horn glowing green.
"Mm-hmm" He said, noddind as his eyes glowed green.
Cadence then runned to him but the Queen Chrysalis blocked her path. "Ah, ah, ah. Don't wanna go back to the caves now, do you?" She asked with her horn glowing. Cadence glared at her as Twilight and Tails went to her side.
"Ever since I took your place, I've been feeding off Shining Armor's love for you. Every moment he glows weaker and so does his spell." She said going to his side. "Even now, my minions are chipping away at it." She said as some of the guests saw through the windows a lot of changelings, attacking the shield. [Evil laughter] "He may not be my husband, but he is under my total control now." Both Twilight and Cadence gasped. "And I'm sorry to say, unable to peform his duties as captain of the royal guard!" She said.
"Not my Shining Armor!" Cadence said.
"Soon, my changeling army will break through. First, we take Canterlot. And then all of Equestria!" She said.
"No. You won't." Celestia said. "You may have made it impossible for Shining Armor to perform his spell, but now that you have so foolishly revealed your true self, I can protect my subjects from you!" Celestia charged at her then she flied above her and charged her horn, then fired a yellow beam at the queen, who retaliated with her own green beam. "Don't!" She said as she struggled to mantain it, but she was slowly winning against Celestia, until Luna came through one of the windows with Sonic on her back, she fired at the queen, who lost concetration and was it by Celestia's beam too.
"Girls, you need to grab the elements of harmony!" Celestia said.
"Sonic, lead then to where the elements of harmony are." Luna said as she put Sonic on the ground.
"But I don't know where it is." He sid.
"We hid them on your room, now go. We will hold her until you all came back." Luna said as the queen get up, growling.
"Come on, follow me!" Sonic said as he runned outside, they following behind.
When they where at the way to the towers, they saw the army of changelings slamming themselfs at the shield, making it cracking in various places. "Fast! We're running out of time!" Sonic said as he begin runned a lot more fast then them.
"Wait!" They were getting behind, unnable to keep pace with Sonic. "He's too fast to follow!" Twilight said, then they saw that the changelings finally destroyed the shield, they begin attacking the ponies around the city, some notice them and surrounded them. "Looks like we're gonna have to do this the hard way!" Rainbow said as she take a step, but another Rainbow came to her front, they keep looking at each other until her copy punched her. "How did you-" She stop herself when they notice the changelings taking their forms.
"They're changelings, remember?" Twilight said.
Five more Twilight appeared. "They're changelings, remember?" They repeat what she said. Creeping out the girls.
"Don't let them distract you. We have to find that filly, only he knows where the elements of harmony are. It's our only hope." Twilight said as they harged at their copes.
The area begin set up so much dust from the big fight that was really hard to see anything 5 foot from you.
Fluttershy was scared as she lose sight of her friends, then notice three of her copes glaring at her. Fluttershy then frowned and pretended to be a cope too. Her copes just shruggered and pass her, looking for one of the originals to attack. Fluttershy then dashed to the other direction but found 4 Rainbow Dashs glaring at her, she just prepared herself for the inevitable but then one of them attacked the others revealing to be the original.
Applejack then went to Twilight back as they were surrounded by her friend copes and some changelings who didn't changed form. Applejack then notice that was a fake Twilight as it changed back to his base form, it roared in her face. "Okay, this is just getting weird!" Applejack said as it attacked her, then a lot of others fake Applejacks jumped on her.
Twilight fired a sleeping speel on her cope, making it go back to it's normal form, then notice a mountain of Aplejacks, she begin firing a barrage of magic beams at them. She then levitated on the her. "Hey, real me, real me!" Applejack said as Twilight released her.
Pinkie Pie was staring at one changeling at her front, it begin changing his form to Rarity, then to Rainbow Dash, then to Fluttershy. [giggling] "Do me, do me!" Pinkie said, laughing. The fake Fluttershy rolled her eyes, then turned in Pinkie Pie. "Eh, I've seen better." Pinkie Pie said as she pulled her confetti cannon out of nowhere and fired at her cope. Making it crash on 10 others copes of them.
Tails was trying to find Sonic around the mess, but everytime he tries to take flight, he is hitted by a magic beam by some of the fake Twilights or kicks from fake Rainbow Dashs. He then saw the girls, he went to their side and almost got punched by Rainbow. "You and your copes seems to love attacking me, I wonder why?" Tails asked annoyed.
"[chuckled] Sorry." She said as she punched a Tails cope. "And no, at least I don't like to hit my friends." She said. They continued fighting until they had cleared the first wave of changelings.
"Hurry. Before they reach us!" Tails said as he runned to the towers, the girls following behing.
(WITH SONIC)
"What we do now? We lost the others!" Sonic said as he blocked the door with his bed.
"We have to find the elements that aunt Luna said." Cinos said as he glanced around the room. A thud came from the door.
"I'll block the door. You try to find it, fast!" Sonic said as he begin pulling the mobiles to the door. One changeling appeared at the window, surprising Sonic, but the he spindashed it.
"Didn't know you could do that." Cinos said as he searched through some boxs.
"Neither me." Sonic said as he pushed the wardrobe to block the window. Cinos then notice the floor where the wardrobe where, looked loose.
"Sonic, look." Cinos pointed it, Sonic removed the tile and found a box decored with some gems, he opened it and found five necklaces with different gems and one crown with a gem on top of it. "We found it!" Sonic cheered, but then they saw the changelings breaking the door down.
"Ahh!" Sonic went to the balcony, only to find a lot of more changelings hovering close. "What we do, now?" Sonic asked.
Cinos looked down at the garden, then he had an idea. "Jump." He said.
"What?! You crazy? I don't know how to fly!" Sonic said as the door finnaly break down and the chnagelings rushed inside.
"Sonic, trust me! Just jump before they get you!" Cinos said as he saw the changelings charging at them.
Sonic then jumped right before one of the changelings could grab him. "AHH!" Sonic screamed and closed his eyes, preparing himself for the crash, but it never came as he opened his eyes and saw that Tails was levitanting him.
"Tails, I found it!" Sonic hadle him the box, but the three more changelings appeared from behind and hold him down. "Hey, what are you doing?" Sonic then saw Tails turning into one of the changelings. [gasps] "No!" They begin bringing him back to where their queen was.
(AT THE BALLROOM)
Celestia and Luna wake up trapped on what looked like cocoons on the ceeling, Shining Armoe at the altar still controlled and Cadence was with her hoofs trapped on the ground next to the altar, while Spike was at her side.
"You won't get away with this! Twilight and her friends will—." As Cadence say that, the doors opened revealing the girls been carried to the room, the changelings released them but hovered around them.
"You were saying?" Queen Chrysalis said, smugly. "You do realize the reception's been cancelled, don't you?" She asked as the doors where opened again with two more coming inside, one carring Sonic who was struggling to free himself, and the other was carring the box with the elements.
"Oh, look what we have here." She said as she went to Sonic. "So you found the elements, huh? Well you won't be needing them." She said as she grabbed the box and thrown it to the side next to the altar. "Now, what I'll do to you? Hm." She wondered.
"Leave him alone!" Tails shouted as he tried - to no avail – attack her.
"Or what?" She challenged him.
"Uh, I will-." He was interrupted as they heard a explosion from outside,
"What was that?!" The queen asked as they looked to the window and saw that the changelings were fighting robots.
"Talk about timing." Rainbow Dash said.
"Grr! Destroy that stupid things!" Queen Chrysalis ordened her minions, they released Sonic and went outside, leave just her against the girls. "How you did that?" She asked Tails.
"That's was not me." Tails said, smirking.
[growled] "You'll see it!" She was about to shot Tails when the ceeling exploded, send everyone off they feet and releasing the princesses.
"Hello again, you pests!" Eggman said as he came from the ceeling on his eggmobile, followed by noneless than Metal Sonic who was glaring at them with his red glowing eyes, and a thing that looked like a yellow fox plushy with two tails was hovering next to it, it has a glowing gem on it's forehead and was staring creeply at them, sending chills at their spine, even Chrysalis was creeped out by that, but manage to hid it. "Minions!" She called them as her army came around her.
"You're not the only one that has your own army!" Eggman said as he slammed a button and a lot of robots came inside the room through the walls and windows, destroying the rest of the ballroom.
"Guards!" Luna shouted as the guards that didn't where knocked out by the changelings came from the doors, going in front of the princesses, who were glaring at Eggman and Chrysalis, who were doing the same thing.
Tails could feel the tension in the room, a little noise and everything could go from bad to worse. He then noticed that Twilight sneaked pass the changelings and robots and released Cadence from the green slime that trapped her. Sonic did manage to sneak at the box with the elements, but before he could do something. "Hey, you!" Queen Chrysalis shouted as hell broke loose.