The changeling kingdom had always been rejected, and it never really got a lot of new members to the army, but it did however have a lot of citizens. It was dark there, as usual, and many of the changeling were waking up to do their daily routine. Queen Chrysalis sat on her throne with a bored look on her face trying to come up with an evil plan to overthrow Canterlot again since her last plan had been a disaster. The numbers of her army had not yet recovered and she was running out of options. Suddenly there was a knock on her thrown door.
"This better be good!" said Chrysalis from inside her throne room.
"Yes you majesty." said one of her servents. He walked inside the room. "It seems we have found a breach in Canterlot's power." "It seems the one they call Twilight Sparkle has been imprisoned by Celestia herself due to her going crazy." "She is one of the elements of harmony, and without Princess Cadence around, we have a sure fire chance of being able to take over."
"Hmm... sounds promising, do you have any sort of plan for this?" asked Chrysalis impatiently.
"Actually I thought we would figure it out as we went... my first idea was we disguise as one of the guards and wait until we had a chance to strike, then the rest of us would come in and kill off everypony in Canterlot, does that sound good to you your majesty?"
"This pleases me, I wonder why I didn't think of it sooner... Squire, get our troops in position, I'll signal them when it's time to strike." Chrysalis walks over to an open window and flies out of it heading straight for Canterlot.
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Back in ponyville the rest of the mane six sat inside of Sugarcube Corner trying to figure out how they could get Twilight out of Canterlot dungeon and try and snap some sense into her. "oh... what if we just have a distraction while the rest of us sneak down to the dungeon and and break Twilight free!" suggested Pinkie.
"Are you kidding me Pinkie, Canterlot is heavily guarded, even if we could get in, Twilight is probably trapped inside of doors that are only able to open with some kind of power magic." replied Rainbow Dash.
"umm... what if we just... ask nicely?" suggested Fluttershy. Fluttershy's suggestion was ignored due to her being too quiet.
"I reckon Pinkie's idea is the only chance we got Dash" said Applejack.
"Um hello... didn't anypony hear me?" Fluttershy tried again.
"Alright darlings, lets do this" replied Rarity.
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Chrysalis finally reached her destination. "Alright... it's show time" Chrysalis said to herself. Chrysalis transforms to look like one of the Canterlot guards and approaches the front door. The guards look her up and down and then allows her access inside. 'I'm in' Chrysalis thought to herself. She approaches the the throne room and walks inside. The disguise also disguised her voice for her so she didn't have to try and sound like one of the guards. "Your majesty" said Chrysalis "How is Twilight Sparkle doing?" asked Chrysalis.
"Oh, she's doing alright for being crazy i guess... why do you ask?"
"Oh um... I forgot how to get to the dungeon because I haven't been down there in a long time... we rarely have prisoners and I wanted to talk to her myself."
Celestia raises an eyebrow "And why's that?"
"Just to check up on her"
"Very well... follow me." Celestia walks down to the dungeon with Chrysalis following close behind. Eventually they reach the huge door that holds Twilight inside and Celestia opens the door to allow Chrysalis access. "I'll be waiting out here, but be careful in there, Twilight is a tricky one. Chrysalis walks inside and Celestia closes the door behind her.
"What the...?" said Twilight "What do we have here... one of the guards? What do you want with me?"
"Oh Twilight... not a guard." Chrysalis reveals her true form.
"Queen Crysalis? What the hell? I must be having one of those weird dreams again."
"Twilight Sparkle, I heard you had gone mad and wanted to see for myself, and it looks like it's true and since that's the case, I was wondering if you might want to join my forces, and together we can rule all of Equestria, what do you say?"
"Chrysalis, normally I would say no to your offer, but judging from how life is treating me I suppose I could help you... What's in it for me?"
"You can have half of the land we conquer?"
"Hehe, Chrysalis... you got yourself a deal!"
"Excellent choice...!" Chrysalis uses some kind of dark counter magic to destroy the chains binding Twilight. "Alright now, are you ready to unleash my plans?"
"Haha... free at last...! You fool... you think I would work for you?!, you're dumber than I thought"
"Why I oughta...", but before Chrysalis could finish her sentence Twilight cast a spell on her that countered one of the spells she had which was transforming, and transformed Chrysalis into Twilight. Twilight then magically bind Chrysalis down where she once was. "How does is feel to be chained up Chrysalis?"
"Let me go!... you won't get away with this?"
"Oh... but i will!" Twilight uses a powerful teleportation spell to teleport outside of the dungeon and outside of Canterlot castle. Twilight the spreads her wings and flies out into the sunset with evil intentions in mind.
Deep in the darkness of the Canterlot dungeon lit only by torches down a long hallway, Celestia walks slowly to the room where her former student is locked away. The dungeon is very dark, quiet, and had a very musty smell to it. Celestia finally reaches the end of hallway to a giant steel door, indestructible to anything other than Celestia's own magic. Celestia sticks her horn into the small hole on the door to unlock it, then walks inside slowly. Then a light comes on.
"Hehehe... Hello there Princess Celestia" said a psychotic looking Twilight Sparkle. "It sure has been awhile since you visited me down here"
"You know why I'm here Twilight, I'm here to finally kill you, you have been trapped down here far too long, and i just can't have you alive anymore, your element of harmony is useless and must be passed on to somepony else."
"Hehe, oh Princess, you always did make me laugh, you cannot kill me, I'm immortal now, remember, and after all these years, you couldn't possibly kill me, i'm your favorite student."
"I can too kill you Twilight, I have the magic and the strength to do so."
Twilight tries with all her might to break free again, but the magic chains around her prevented her from doing so.
"I never should have granted you the ability to be a princess, it just made you go mad" a tear falls from Celestia's face onto the concrete floor she stands on. "I just wish I could have the old Twilight back, but once a pony becomes an alicorn, it's irreversible."
"Oh shut up Celestia, you made me this way in the first place, that must mean you love me this way... unless you trapped me here on purpose because you're afraid I'll replace you as ruler of Equestria."
"Twilight... I did love you, but your actions have killed thousands of ponies, and I cannot allow those actions to continue."
"Fine... go ahead, kill me, you don't have the heart to!"
She was right, Celestia didn't have the heart to kill her very favorite student.
"...You have one more day Twilight Sparkle, ONE MORE DAY!!" Celestia exits the rather large cell and locks it again, then starts walking back through the very long hallway and out of the dungeon.