In the evening ,At the School of Friendship Sandbar was walking towards the libary to meet his friends when he overheard some mares talking amongst themselves.

"Cozy Glow baked our class cupcakes today!" The first one said.

"And she made all of us friendship bracelets! "The second one said, a few seconds later.

"She's the nicest pony I've ever met."The third one said." I'm so glad she's headmare!"

"Uh, temporary headmare? Right, guys?" Sandbar said.

"Oh, oh, of course, but if Twilight takes her time coming back, I won't mind." the first mare answered.

All three of them started laughing,Sandbar noticed that Patty started laughing a bit later then the others.The he arrived at the libary and opened the door.

"Finally! We thought you forgot about study club." Silverstream said.

"Sorry I'm late." Sandbar said "Cozy Glow gave our class tickets to a Sapphire Shores concert in Ponyville tonight."

"You get the feeling Cozy's trying too hard to make us like her?" Gallus asked.

"Or maybe she just wants to help us keep our minds off of how scary it is that magic's disappearing."Ocellus said.

All of them nodded in agreement.Then they noticed that Cozy Glow was in the library too,organizing a few books.

"Why Cozy pony in the libary so late at night?" Yona asked

"Let's go ask her"Gallus said but before they could approach her,Cozy flew out of the libary towards Twilight's Office and the Young Six started following her.

Meanwhile, Twilight and her friends had reached the gates of Tartarus.

"This is the only door to Tartarus."Twilight said "The good news is the seal isn't broken, so we know Tirek didn't escape."

"Let me guess." Applejack said "You got bad news, too?"

"Last time I was here, I had to use magic to get in." Twilight said "And according to Star Swirl, all unicorn magic was gone by yesterday's sunset."

"Maybe he was wrong." Rainbow Dash said.Twilight tried to open the door but failed.

"Don't worry, Twilight. I got this." Pinkie Pie said,then she knocked on the door. "Free pizza delivery!"

After a moment of silence, Pinkie Pie spoke.

"Huh. Always worked before." Pinkie said "Oh, well."

"Did any of y'all pack somethin' that could actually help?" Applejack asked.

"These all do magic, but not the kind we're looking for, I'm afraid." Rarity said looking at her own mane equipment.

"How about this?" Spike asked.

"The Key of Unfettered Entrance!" Twilight exclaimed " Where did you find this, Spike?"

"In your bag." Spike answered "Cozy Glow must've packed it for you."

"She really did think of everything." Twilight said.

"Um, what does it do?" Fluttershy asked.

"It can magically open any door." Twilight said "And since artifacts like this haven't lost their power yet... "

Twilight put the key in then it opened the door.Twilight tried to put it in her bag with her mouth put she accidentally dropped it to the ground and then the key shattered

"Oops" Twilight said as they all got in.The door closed behind them.

Cozy Glow walked into Twilight's Office while the Young 6 watched and found Chancellor Neighsay sitting in Twilight's chair,much to the surprise of her and the Young 6.

"So this is who Starlight left in charge in her place before she joined Twilight and her friends ?" Chancellor Neighsay said.

"Yes but how do you know about that?" Cozy Glow said.

"I had some inside help." Chancellor Neighsay said.

"Um....is there anything I can do for you?" Cozy asked.

"That won't be necessary. Twilight's folly stops here." Chancellor Neighsay said. "As of now, I am headstallion. And I have quite a few changes to make."

Meanwhile,In Tartarus

"If all these monsters lost their magic, then getting past Cerberus should be easy-peasy!" Pinkie Pie said.She turned a monster's frown into a smile but it turned into a frown again.

"Look out!"Rainbow Dash exclaimed. Then Cerberus ran past them and they all got out of the way.

"I'll talk to him."Fluttershy said.Cerberus growled.

"Um, excuse me, puppy?"Fluttershy asked as Cerberus snorted. " You're a very good guard dog. Yes, you are. But, um, we were wondering if we could get by to check on Tirek."

Cerberus slurped.

"That looks like a yes." Applejack said.

"I'll get you a towel, darling." Rarity said. Fluttershy giggled.The Main 6 and Spike approached Tirek.

"The Princess of Friendship here for a visit." Tirek said "What have I done to earn the honor of your company?"

"We want answers, Tirek." Twilight said "Magic is disappearing from Equestria."

"I know." Tirek said "What a waste of such...delicious power."

"So you are behind this! " Rainbow Dash exclaimed.

"Silly filly, if I had all of that magic, you think I'd still be locked up in here?" Lord Tirek asked her "But I might know something about it..."

Meanwhile,At the School of Friendship,In Twilight's Office Chancellor Neighsay threw the student records of the Young 6 in the trash.

"What are you doing?!" Cozy Glow exclaimed angrily "Those are Twilight's student files!"

"These aren't. Not anymore." Chancellor Neighsay said "With Equestria under attack, ponies must stand together. Twilight has endangered us all by skipping off on friendship trips while these disgusting creatures run loose."

"Take that back!" Cozy Glow exclaimed "They aren't disgusting!"

"Yes they are. I'll make sure to rid this school of these monsters and there is nothing you can do about it unless you want to be kicked out of the school."

The Young 6 started talking from the doorway giving away their positions.

"Did you hear something?" Chancellor Neighsay asked Cozy Glow.

" Nope!" Cozy Glow replied,realizing who was behind the door.

Chancellor Neighsay opened the door to reveal the Young 6. The Young 6 grunted as Cozy Glow panicked, worried about what Chancellor Neighsay would do to the Young 6.

"You again. As I suspected" Chancellor Neighsay said.

"Chancellor Neighsay please don't do anything to them.They didn't do anything wrong." Cozy Glow said,shutting up once Chancellor Neighsay shot her a threatining glare after chaining the Young 6.

Later Chancellor Neighsay opened the door of and threw the Young 6 into a dorm room.

" You disgusting creatures will stay here while I summon your guardians to take you home." Chancellor Neighsay said.

"Wait! You were right about them from the beginning, Chancellor." Sandbar said "I see that now."

"What are you saying?!" Smolder exclaimed.

"Sandbar?!" Silverstream said.

"I don't want anything to do with these disgusting creatures! " Sandbar said. Gallus and Smolder glared at him while Yona, Ocellus and Sİlverstream stared at him in shock.

"Wisely put, colt." Chancellor Neighsay said.Then he disabled the chains and the ponies left the room.

"Everypony will come to their senses eventually." Chancellor Neighsay said before Sandbar closed the door.

At Sweet Apple Acres, Sandbar was throwing apples at Apple Bloom's window. She opened the window to see a watering can getting thrown at her.

"What in tarnation?!" Apple Bloom exclaimed.

"Sorry. I ran out of apples. I need the Cutie Mark Crusaders." Sandbar said "My friends are in trouble. Chancellor Neighsay locked them up."

"Huh? I thought Cozy Glow was in charge." Apple Bloom said

"Not anymore. But you guys are good buddies." Sandbar said "If you can convince her to distract Neighsay, I can break out my friends. Will you help me?"

"Do mulberries have seeds?" Apple Bloom said,then left. Apple Bloom returned two seconds later.

"That's a yes" Apple Bloom clarified.

In Tartarus,with The Main 6 and Spike…

"Where is Equestria's magic going, Tirek?" Twilight Sparkle said "What's making it disappear?"

" If you let me out, I'm sure it will jog my memory. " Lord Tirek said "What do you say? I scratch your back, you scratch mine?"
"How about you tell us what you know or you'll be stuck here forever, because we're out of magic keys and nopony can open the door?" Rainbow Dash said.

"Oh, dear." Rarity said "I hadn't thought of that."

"We're just as trapped as Tirek?" Spike asked,worried.Tirek chuckled.

"What a pity. Well, for you." Lord Tirek said "Sweet revenge for me. It look like my protégé's plan worked after all."

The Mane Six and Spike gasped.

" Which protégé?" Applejack asked,shocked.

"Oh, we've never met. We're pen pals." Lord Tirek said "Each letter had so many questions about draining magic."

"And you answered them?!" Pinkie Pie said.

"I was bored." Tirek said "So I simply pointed my pen pal in the right direction."

"Can't you just tell us your pen pal's name?" Fluttershy asked him "I mean, since we're stuck here anyway?"

"Oh, why not? The irony is too perfect." Lord Tirek said "Their name is..."

At the School of Friendship,Cozy Glow was heading towards the catacombs while Sandbar and The Cutie Mark Cursaders were trying to keep up with her.

"Hey Cozy! Wait up!" Sandbar exclaimed.Cozy Glow stopped and turned towards them.

"Hi Cozy.What are you doing?"Apple Bloom asked.

"Hi everypony! I'm following Clear Sky. She has been acting very suspicious lately and I am trying to find out what she is up to." Cozy Glow said "I saw her heading towards the catacombs so I followed her here. I was about to go down the caves when you guys arrived ."

"Do you want us to come with you?" Sweetie Belle asked her.

"Sure!" Cozy Glow said .

"Come on everypony let's go!" Scootaloo said.

They all went down the crystal caves and looked in shock to see Starlight Glimmer trapped in a barrier with six artifacts surrounding it in a magic circle.

"Enjoying yourself in there, Starlight? I'm sorry I had to push you in." Clear Sky said "But what else could I do? You were going to ruin all of my plans."

"Oh wait I'm not sorry you took everything from me, and now I will finally I have my revenge." Clear Sky said using her magic to transform into none other than Queen Chrysalis.

Sandbar, the CMC, Cozy Glow, and Starlight all gasped.

"Now that I have you here in my clutches, not only will I be able to send all the magic to another dimension but I will also be able to send you with it and you will never see yor friends again, especially your little crush Twilight." Chrysalis explained before evilly laughing.

Starlight's eyes widened in shock as she didn't know Chrysalis knew about her crush. Sandbar and the CMC gasped at the revelation as well.

Cozy Glow shrugged "Meh I figured it out a while ago."

"Oh I knew about it all along Starlight I do feed off of love after all and now you will never see Twilight again. MWAHAHAHAHAHAHAHAHAHAHAHAHA."

To Be Continued.

Author's Notes:

I had Twilight drop the artifact because this Cozy Glow would know better than to use a seal that only works once. Also yes I'm making TwiStar happen this will be important later come Season 9.