Back in the Castle throne room, the five elements and dragon along with Princess Cadence, Shining Armor, Luna and Celestia all stared in shock and confusion at how the sith holocron spoke to them. They wondered how it was possible but more importantly why Twilight had it in the first place. None of them dared to speak at the risk of the holocron causing any devastation to Canterlot. After several minutes of waiting, Celestia was the first of the group to speak.
"Very well, dark item. I want to know how and why you corrupted her? How did she know about you?" Celestia asks questioning the holocron.
"Her anger called out to me. The young creature was weak and in pain. I showed her a power that can give her strength."
"What do you mean? How was she in pain?"
Meanwhile, back in the hospital, Twilight was fully awake and very angry. Apparently, she not only sensed the holocron, but that it was in the hooves of her brother, mentor, and friends. Before, she was angry with the changeling queen and her army for attacking her home, but now, she was even more angrier and now she had one task in mind, to retrieve the holocron through any means necessary. She attempted to get up and leave, but the doctor and several nurses attempted to stop her.
"Please Ms. sparkle, you are in no condition to leave! You must rest!"
But, the struggle continued as the young pony threw the nurses and doctors all over the room. Twilight manages to get her lightsaber and then make her way into the hallway, but the nurse in the room manages to make her way in the door jam.
"Stop that pony! Don't let her leave the building!"
The other doctors and nurses and security guards receive the message and they run toward Twilight. Twilight turns and sees the approaching doctors, nurses and guards approaching her. The guards restrain her and carry the struggling mare back to her room. The guards place her back in the bed and attempt to hold her down. A doctor enters the room carrying a syringe with his magic along with a bottle of morphine.
"Hold her down and I'll inject her with morphine. This oughta put her to sleep." the doctor said.
Twilight continued to struggle and sees the doctor filling the syringe causing her to become even more angry eventually causing her to hit her boiling point. She uses the force and sends the guards into the wall. Twilight jumps out of bed and began to fight the doctors and nurses. One nurse jumped on her, but Twilight throws her through the wall, leaving a hole . The doctor filling the syringe began to worry as he saw the anger in Twilight's eyes. He drops the syringe and bottle of morphine and ran out of the room. Twilight was panting heavily and she began to take her leave.
Back in the throne room, the group continued to speak to the holocron but wondered how Twilight's anger called out to it.
"Okay, you little trinket. Tell us how Twilight's so called anger called to you." Rainbow Dash angrily asked.
"Her anger called out to me because of you fools. You are the cause of all of this. She told me of how you betrayed and abandoned her for your so called wedding. Her anger and rage gives her strength."
"That explains how she defeated those changelings in the wedding hall." Rarity said.
"I don't care! Either you tell me how to change my sister back to normal or else-" Shining Armor threatened.
"There is no saving her! She is a sith warrior and once you become a sith, there is no turning back!"
"That's it! Until we figure out a way to save Twilight, you will be going into the vault until further notice!" Celestia declared.
Celestia calls for a guard and a guard comes running into the throne room and Celestia hands the holocron to the guard.
"Take this disgusting thing to the vaults and lock it down hard! And gather whatever guards you can and station them at the vault entrance!" Celestia ordered.
"Yes, you're highness." the guard replies and he runs off.
"Um, auntie? Might I ask why?" Cadence asks.
"I to with to know what this holocron was speaking of. What did it mean by you being the cause?" Luna asks.
"It's Twilight I'm concerned about. If this holocron wasn't lying about this so called sith. Twilight will do everything in her power to take it back."
"I understand, auntie. But also, the holocron said that you along with the five elements and Shining Armor were the cause of all of this. What did it mean?" Cadence asks.
"Well, I'm not sure how to explain it but I'll tell you what happens later this afternoon. I promise."
Cadence arches her eyebrow in suspicion at Celestia's reply, because she knew Celestia was hiding a terrible secret. But, she decided to trust her auntie. She, along with the group began to leave the throne room in order to visit Twilight at the hospital. The group arrive to the hospital only to find complete destruction. Celestia sees the nurse on a stretcher and runs over to her with concern in her eyes.
"Nurse, what happened here? Where is my faithful student? Is she alright?"
"Your student. She left an hour ago. We tried to stop her but she was to powerful. I warn you. You have to be careful." the nurse groaned.
"Hold on, Twilight did all of this? That egghead? No way!" Rainbow Dash said.
Meanwhile, in the Canterlot town square, the citizens were going about their daily routines until they spot the republic shuttle landing toward them. The shuttle door opens, revealing Anakin Skywalker, Ahsoka Tano, Captain Rex and one clone trooper with blue streaks on it. All of the ponies stare at the creatures as they exit the shuttle toward them. The citizens stared in awe at them and eventually several guards charged toward them with their spears pointed at them. Rex and the clone pointed their weapons at the guards, causing the citizens to scream and run indoors.
"Who are you, creatures? If you are friendly, lower your weapons immediately." one of the guards demanded.
The stand off continued for several seconds when Anakin orders Rex and the clone to put their weapons away. Rex puts his pistols away and the clone lowers his weapon as well. Seeing what was happening in front of them, the guards lowered their spears. Seeing this, the other ponies exited their houses relieved that the worst was over. Anakin and Ahsoka both stepped forward in order to speak to the guard.
"My name is Anakin Skywalker of the jedi order. This is my padawan Ahsoka Tano. You've already met Captain Rex and clone trooper falcon. We wish to speak to your leader." Anakin said.
"Of course. If you'll follow us, we'll take you to see Princess Celestia and Luna right away." the guard said.
With that, the guards began to lead the jedi and clones to the throne room. The group make their way past several buildings and ponies. Anakin, Ahsoka, and the clones were surprised at what they we're seeing. The creatures that Anakin saw through the force were real and they did have horns, wings, and were four legged. But, what really surprised them the most was how they saw they beauty of the world they were on and that it wasn't affected by the clone war. The group soon arrive to the throne room, and see Princess Celestia, Luna, Cadence, Shining Armor, the mane 5 and spike. The group see the two jedi and clone troopers in the throne room and were in complete surprise at what they were seeing. This was a very awkward moment for all of them. Anakin knew the princesses were the leaders of the planet and he decided to drop down to one knee. Ahsoka, Rex and the clone did the same.
"Greetings, you're majesty. I am Anakin Skywalker, knight of the jedi order. This is my apprentice Ahsoka Tano, captain Rex of the clone army and clone trooper falcon. We have come to your world in peace." Anakin said.
"Of course, jedi knight. But, I am afraid now is not a very good time for a meeting. My apprentice has gone missing." Celestia replied.
"I understand, your majesty. But, we are here because we are in search of an ancient relic of great darkness, a sith holocron. The jedi council sent me and my apprentice here to find it and destroy it by any means."
Upon hearing this, the group realized what the jedi was talking about. It was the very same sith holocron that turned Twilight into a sith lord. But, Rainbow Dash became angry because she began to think that the jedi were somewhat responsible for Twilight finding the sith holocron. She flared her wing and flew straight into Anakin's face.
"Hold on, are you telling me that you knew about that thing all along?!" Rainbow Dash angrily questioned.
Ahsoka was preparing to draw her lightsaber, but Rainbow Dash was yanked backwards. Rainbow Dash saw that it was Applejack who yanked her tail.
"Whoa there, Rainbow. It's not his fault. He must've had no idea that that holocron thingy was here all this time. Right now, our main priority is finding Twilight and saving her. But, we need figure out where she is first."
But, at that moment, a massive boom scared the massive group and shook the throne room. They began to try and figure out where the explosion came from. It was then, Celestia figured out where the explosion came from.
"That was at the vault where the elements of harmony are kept! We need to get over there now!"
With that, the massive group including the two jedi and two clones began running out of the throne room. They arrive to the throne only to discover the door were ripped off the hinges and look inside to find several dead guards all around. Seeing this sight caused Fluttershy to scream and Rarity to faint. They all look around in search of any survivors but at the same time wondered who was responsible for this carnage.
"Mother of Celestia, what kind of monster could cause this much carnage in here?" Cadence asks.
"Help me." a voice groaned.
The group turn to see a white hoof in the air. They all run toward it to see a white Pegasus guard was alive. Ahsoka and Anakin kneel down to one knee to help him up.
"Guard, what happened here? Who did this to you?" Celestia asks.
"It- it was Lady Sparkle. She did this." the guard answered.
The group of friends were all in complete shock at what they heard. Twilight was the one responsible for the carnage in the room. They never knew Twilight to kill a pony.
"No. It can't be. Twiley's not a killer. Where is she now?" Shining Armor asks.
"She- she's headed for the vault right now. You have to stop before she gets the holocron. Please?" the guard asks.
With that, the group of friends began making their way to the vault following the trail of dead guards on the wall. And there were several guards pinned to the wall by their spears. The group couldn't help but stare in horror at the carnage that Twilight caused. After several minutes, the group arrive only to find Twilight using the force to rip the vault door clear off the hinges. But, Twilight stops and growls because she knew that her five ex friends, Celestia, and Shining Armor were there. She turns toward them revealing her sith eyes causing her friends to gasp.
"What are you cowards doing here and with jedi? Because, I am in the middle of taking back my sith holocron from a bunch of cowardly thieves!" Twilight growled.
"Twilight, listen to me. That holocron thingy is corrupting you. You need to let us help you." Cadence pleaded.
"She's right, sugarcube.I know the real you and your not a killer. You have to fight it." Applejack added.
"Right. Except you're wrong on some things. One, I don't need help from any of you, I don't want your pity and I don't want your friendship ever. And two, before I found the holocron I was weak and broken. And how do you think that happened?" Twilight questioned.
Hearing Twilight's question brought to mind of what the five friends, Shining Armor, Spike and Celestia did to her at the wedding rehearsal before the invasion. But, Cadence, and Luna had no idea of what they did and became confused. They needed to know what it was Twilight was talking about.
"Auntie, what is Twilight talking about? What is it that she's talking about?" Cadence asks.
"You know, sister. That is something I would like to know too. What did happen to her?" Luna asks as well.
Celestia tried to come up with the answer to Cadence and Luna's question. The two alicorns turn toward the five friends and Shining Armor demanding an explanation from them as well. They tried to come up with the answer, but couldn't. Instead, they all hung their heads in shame, causing Twilight to groan in annoyance.
"Oh for the love of, to answer your question, Cadence and Luna, it was at the wedding rehearsal, I tried to expose the changeling queen, but do you know what happened?"
Cadence and Luna shook their heads no, indicating that they had no idea what happened.
"Well, after the impostor ran out crying, bonehead there said it was wedding stress and threw me out of the wedding! Then, oh you'll like this next part, my five so called friends who stood by my side, abandoned me as well and finally, the great and wise Princess Celestia followed suit. If they had listened to me and focused on the unknown threat, Canterlot wouldn't have been subjected to an invasion." Twilight replied pointing at the group.
At that moment, Cadence was in complete shock at what she was hearing. The same pony that Shining Armor loved was tossed aside like yesterdays trash for her. And her friends and mentor followed suit all for a wedding. She became angry and turned toward Shining Armor and the group of friends and Luna turned toward Celestia to demand an explanation from them.
"Shining Armor, I want to know. Is Twilight telling the truth? Was she thrown out of the wedding?" Cadence asks.
Shining Armor tried to come up the answer but remained silent, causing Cadence to become more upset. And Luna demanded the same thing from Celestia but remained silent as well.
"Shining Armor, the truth."
"Yes. It's true. I stripped Twilight of her best mare title and kicked her out of the wedding. But, I had no idea her friends and Celestia would follow suit. I swear."
"I can't believe it. How could you do that to your sister? She was your family and you tossed her aside like garbage."
"Hey, don't blame us, it was her fault because she came barging in there like a mad pony, throwing around false accusations about the princess!" Rainbow Dash said jumping in.
Hearing Rainbow Dash's comment, Cadence wanted to slap her, but instead, Rainbow Dash was sent flying into a wall. The group look to see that it was Twilight who was angry at what happened.
"Don't you ever talk to my foal sitter like that again, Rainbow dash. " Twilight threatened.
"Now see here darling. That was just plain rude. There was no need for that." Rarity says.
"Why not? Big mouth over there talked back toward my true friend Cadence. She's the one who was being rude not me." Twilight responds.
"Ow! That's it! I'm going to pound you into tiny little pieces, egghead!" Rainbow Dash threatened and tried to charge at Twilight, but Applejack grabbed her tail and stopped her.
"Hold on, Rainbow! We're here to help Twilight, not fight her so I suggest you sit a spell and cool off. Besides, all six of us represent the elements of harmony. I was suppose to represent the element of honesty, but I was only dishonest because of that stupid wedding."
"I represent the element of generosity, but the only thing I generous to was that fake bride instead of you." Rarity solemnly says.
"I represent the element of kindness, but instead I was hurtful and didn't comfort you at the wedding rehearsal." Fluttershy says.
"I represent the element of laughter, but instead of trying to make you laugh and try to cheer you up, I was a big meanie." Pinkie pie says and her mane becomes flat.
"Right. And Rainbow Dash represents the element of loyalty, but instead she thought about her rainboom stunt at the wedding and was selfish." Twilight said guessing. "Right, but instead I have my own versions of the elements you represent, Applejack represents dishonesty, Rarity represents greed, Pinkie Pie represents hatred, Fluttershy represents cruelty and finally Rainbow Dash, you get selfishness, because that's what you are!"
"THAT'S IT! I'M GOING TO RIP YOUR HORN OFF YOUR HEAD AND STUFF IT DOWN YOUR THROAT!" Rainbow Dash shouts and spreads her wings.
The group of friends become horrified at what was about transpire right before their very eyes. Twilight sees what Rainbow Dash has planned and decides to meet her half way. She holsters her lightsaber and get in position to fight. The two ponies charge at each other and soon collide. The brawl flies through the window and into the Canterlot gardens. The group run out the door in order to stop the fight and save Twilight from the dark side.
Down in the Canterlot maze, the two ponies landed on the ground and rolled around until Twilight kicks Rainbow Dash off of her and she lands on the ground. Both mares soon get to their hooves and were ready to fight.
"I trusted you like my sister! And you and the rest of those cowards not only stabbed me in the back, but you put all of Canterlot at risk, all for a wedding!"
"Well, if you'd gathered evidence like you did on the friendship express when somepony took a bite out of the cake, we would've listened to you. But instead, you come running into the wedding rehearsal like a mad pony and started accusing the bride just like that!"
The fight continued for several minutes when Twilight grabs Rainbow Dash and throws her to her right. Rainbow Dash crashes through several statues and eventually comes to a screeching halt. She gets to her hooves and turns toward Twilight with an angry look on her face.
"I'm going to break your muzzle for that."
"Then try it, coward."
With that, Rainbow Dash spreads her wings and takes off toward Twilight. She grabs her and takes off into the air. The group of friends arrive too late to stop them. Twilight and Rainbow Dash continued to fly through the air for several minutes and then, the fight lands in on the ground in the city. The other ponies run away while others stare at the fight that was happening in front of them. The group of friends soon arrive and see the fight was still ongoing for several minutes. Rainbow Dash flew up into the air and prepared to do a dive bomb on Twilight.
"Rainbow, stop! Twilight's your friend!" Applejack shouts.
"Not anymore, Applejack! That is not Twilight anymore!"
But, before Rainbow Dash could reach the ground, Twilight draws her lightsaber and throws it up toward Rainbow Dash, cutting off her wing.
"AHHHH!"
Rainbow Dash crashes into the ground and attempts to stand up, but Twilight kicks her down onto her back. Twilight pulls her lightsaber back into her hoof with the force and points it at Rainbow Dash.
"Your parents should've named you Rainbow Crash. Because, that's all you're ever good at, Rainbow Crash. Always have and always will be."
Twilight turns and sees the rest of the elements, Celestia, Cadence, Shining Armor, Luna and the jedi and clones staring at her in complete shock at what she did to Rainbow Dash. They wanted to try to speak but were afraid at what would've happened next. At that moment, Twilight lights up her horn and becomes engulfed in a bright light. The friends cover their eyes to shield themselves from the blinding light until then, they look and see that Twilight was gone.
Back at the vault, Twilight appeared and used her magic to take her holocron and then performed another teleportation spell and was gone at that very moment.