It was a beautiful night as Ponyville was draped under the light of Luna's moon. Sugarcube Corner was a buzz as the Cakes were celebrating their anniversary. The Cakes' own employee and resident party planner Pinkie Pie was the mastermind behind this party and mostly everypony in Ponyville was there - except for a certain lavender unicorn. Currently, Pinkie was spending time with Rainbow Dash, Applejack and Rarity. Fluttershy was nearby talking to Carrot Top and bunnies eating her crops.

"I gotta give it to ya Pinkie, you really out did yourself." said Rainbow Dash, shoving a cupcake down her throat.

"Darling, please slow down. Eating that quickly cannot be good for you." said Rarity, using her right leg to shield herself from cupcake debris.

"Sorry." replied Rainbow Dash, with a giggle.

"Nothing is too good for Mr. and Mrs. Cake!" declared Pinkie.

"You should be proud of yourself." said Applejack.

Fluttershy finished her conversation and joined her friends.

"How did it go?" asked Applejack.

"Tomorrow I'm going to talk to the bunnies and try to convince them to find other food." answered Fluttershy.

The shy pegasus looked around at the group of friends.

"Um...where is Twilight?" asked Fluttershy.

"I went to Golden Oaks Library and invited her, but she didn't reply." answered Pinkie, shrugging.

"Anypony else notice Twilight has been more distant lately?" asked Applejack.

"Yeah. She's been totally shut up since we kicked Sombra's butt." answered Dash.

"Maybe she has a secret lover she doesn't want anypony else to know about." proposed Pinkie.

"We're here friends, why wouldn't she want us to know if she had a coltfriend or marefriend?" asked Applejack.

"What if it's wanted criminal and Twilight is helping him lay low." proposed Rainbow Dash.

Dash stated to fly up and was clearly somewhat hopeful about this proposition.

"This is Twilight we're talking about. She would never associate with such ruffins." scoffed Rarity.

Rainbow Dash sighed and landed on the floor.

"You don't have to be such a buzzkill." sighed the cyan pegasus.

Suddenly, the door to Sugarcube Corner opened and Spike walked in. After a little prodding, Twilight Sparkle slowly made her way into the party.

"Twilight!" cried the others.

The five ponies quickly made there way over to the friend.

"I'm so glad you could make! We were getting soooo worried!" exclaimed Pinkie.

"I'm fine Pinkie. But, I'm grateful for your concern." replied Twilight.

The other five ponies notices Twilight seemed a bit groggy and had bags under her eyes.

"Have you been sleeping okay Sugarcube?" asked Applejack.

"Not really. I've guess I've just been...busy." answered Twilight.

"I can give you some herbal tea to help." offered Fluttershy.

"I'm fine. Thank you." yawned Twilight, shaking her head.

"I hope your sleep improves darling. That is not good for your complexion." replied Rarity.

The party continued with the others enjoying themselves. Twilight stayed in a corner and tried her best to lay low. Lyra and Bon Bon noticed Twilight so they talked for a bit until Pinkie interrupted the festivities.

"I hope eveeypony is enjoying the party! Now, let's give it up for Mr. and Mrs. Cake!" cried out Pinkie.

The ponies began stomping their hooves and cheering. Except, for Twilight who was annoyed.

"There's too much noise." thought the lavender unicorn.

"Now, I'd like to say a few words." began Pinkie.

Twilight rolled her eyes at this.

"I met Mr. and Mrs. Cake shortly after moving to Ponyville. They were nice enough to give me a job so I could stay at the Hay & Stay." continued Pinkie.

"Shut up." thought Twilight.

"They soon let me move in and I've been living here ever since." said Pinkie, smiling.

"I don't care." thought Twilight, getting angrier.

"For everything you've done for me...thank you." concluded Pinkie.

"Ahh!" cried Twilight, reaching her breaking point.

Twilight didn't answer. Instead, she used her magic to grab a hold of the cake knife on the table.

"Do you want a slice of cake?" asked Pinkie.

Twilight was not interested in cake. Instead, she used her magic to stab Pinkie in the throat with the knife. The party pony coughed out blood and collapsed to the floor. Blood quickly rushed out of her neck forming a pool.

"Oh Celestia." said Twilight, regretting her action.

"Sugarcube...why?" asked Applejack, shaken.

"I..." stammered Twilight.

Twilight looked down. Pumpkin Cake and Pound Cake were crying over Pinkie's body. Mrs. Cake had broke down crying and Mr. Cake was comforting her while shooting Twilight a death stare.

"Arrest that pony!" ordered Mayor Mare, pointing at Twilight.

The other ponies began surrounding Twilight.

"No...I didn't...I..." stammered Twilight.

The ponies closed in but, Twilight used her magic to teleport back to Golden Oaks Library. Twilight jumped into her bed andcurled up.

"Pinkie...I'm so sorry..." whimpered Twilight.

A few moments later, the door to the library opened.

"Twilight, are you here?" asked Rarity.

"They're here." sighed Twilight.

Hoof steps could be heard coming up the stairs. Rarity, Rainbow Dash, Applejack, Fluttershy and Spike arrived finding Twilight.

"I'm ready. I accept any punishment I receive." said Twilight.

"What are you talking about?" asked Rainbow Dash.

"Don't play dumb!" snapped Twilight.

"We're not Twilight. We don't know what you're talking about." said Fluttershy.

"Are you feeling okay Sugarcube?" asked Applejack.

"Yes...No..." answered Twilight stammering.

A pair of hoof steps could be heard in the library and heading up the steps.

"They must be coming for me." sighed Twiliht.

"Who is coming for you?" asked Rainbow Dash.

Before Twilight was able to answer, the pony in question arrived. She hoped up the stairs and joined the others.

"Sorry I'm late. I was trying real hard to save Mr. and Mrs. Cake's anniversary cake." said Pinkie Pie.

"P...P..P..Pinkie Pie." stammered Twilight.

"Do you save the cake Sugarcube?" asked Applejack.

"Yup. Only a little bit was lost." answered Pinkie.

"Awesome! I'm going back for another slice!" declared Rainbow Dash.

The cyan pegasus turned to take off, but Rarity used her magic to stop her.

"I think cake can wait." said the white unicorn.

"Yeah." admitted Rainbow Dash.

"But...this can't be happening." said Twilight, "Pinkie...the knife..."

"You freaked out and knocked over anniversary cake. Then you teleported away." explained Spike.

"I see." said Twilight.

Twilight pressed her hoof to her chin and thought for a moment.

"I guess my lack of sleep is getting to me. I just need a little sleep and I'll be fine." said Twilight.

"Are you sure Sugarcube?" asked Applejack, unsure.

"Yes. I'll see you girls tomorrow." replied Twilight.

The other five wished Twilight a goodnight and left. However, Spike stuck behind.

"Twi, is something wrong?" asked Spike.

"Like I said, I just need a little sleep." answered Twilight.

Spike scowled clearly not fully buying the explanation.

"Ow, can you please feed Owlicious?" asked Twilight.

"Sure." answered Spike.

The baby dragon turned and left. Alone, Twilight pulled out a notebook and quill from under her bed with her magic.

"Let's see...that twenty-eight hallucinations in the past week. They've been increasing everyday." noted Twilight.

Twilight then used her magic to pull out several books and flip through the pages.

"None of these books are helpfully." growled Twilight.

The unicorn rubbed her face with her hooves. She heard Spike quickly heading back upstairs so she hid the items back under her bed.

"I need to find a solution quick." thought Twilight.

As Twilight went to sleep, the other members of the Mane 6 returned to Sugarcube Corner. Twilight's outburst killed the mood and the party had quickly wound down. By the time they returned, the other party guests had all left leaving only the Cakes. When the others arrived, Mrs. Cake was upstairs putting Pound Cake and Pumpkin Cake away while Mr. Cake was cleaning up. The five ponies gathered around a table and sat down.

"What the hey do ya got into Twilight?" asked Applejack.

"I haven't a clue. However, I am most certain there is something more than a simple lack of sleep to blame." answered Rarity.

"Maybe she ate some bad cake." proposed Pinkie.

"Now girls, maybe Twilight is just tired." said Fluttershy.

"I doubt that would cause her to freak out like she did." replied Rainbow Dash.

The ponies all thought for a moment.

"Twilight has been acting odd since we our visit to the Crystal Empire. Maybe something happened." proposed Rarity.

"She was with us most of the time." stated Rainbow Dash.

"Yeah. But, she and Spike ran off to find the Crystal Heart." noted Pinkie.

"Do ya think something happened while she was with Spike?" asked Applejack.

"It sounds like our best bet! Let's go ask him!" declared Rainbow Dash.

Rainbow started to take off, but Applejack grabbed Dash's tail with her mouth to stop the pegasus.

"It's late Rainbow and if Twilight's going to bed then Spike likely will be too." said the farm pony.

"Oh man." sighed Rainbow Dash.

As Rainbow Dash sat back down, Mr. Cake walked into the room having finished cleaning.

"Thanks for the party Pinkie." said Mr. Cake.

"It was nothing. I just wish it could have ended better." sighed Pinkie.

"It was fine. I just Twilight is okay." replied Mr. Cake, "I'm off to help Mrs. Cake. Goodnight girls."

With that, Mr. Cake trotted up the stairs.

"On the subject of romance, how is your love life Fluttershy?" asked Rarity.

The shy pegasus squeaked a bit and blushed.

"I..um...it's..." answered Fluttershy embarrassed.

"Things between us are fine." answered Rainbow Dash.

"How long's it been now?" asked Applejack.

"For a few months now." answered Rainbow Dash.

"Oh...I need have to plane your anniversary party!" declared Pinkie.

"That's really not necessary."replied Fluttershy blushing.

"So AJ and Rarity, how are you and you guys doing?" asked Rainbow Dash.

"We have disagreements on occasion, but our love is strong enough to get us trough." answered Rarity.

"Besides, Applebloom and Sweetie Bell just love the ideas of being sisters." added Applejack.

"I know what you mean, Scootaloo and Fluttershy have gotten along really well." said Rarity.

"I just hope we can help Twilight." said Fluttershy.

"Don't worry, we'll hep Twilight kick the butt of whatever is bugging her.." said Rainbow dash, embracing her marefriend.

"Twilight'll feel better than a hen in a granary." added Applejack.

"Yeah! There's nothing better than making somepony smile!" declared Pinkie.

Meanwhile, the Equestrian Princess of the Sun could not sleep. Princess Celestia walked up and down the hallways thinking over the cause of he woes. Many guards had worried but, she told them she was fine. Celestia had finished talking to a new recruit named Flash Sentry when she entered the throne room. She found she was not alone.

"Hello sister. I am surprised you are not asleep at such a late hour." said Princess Luna warmly.

"My mind is too pre-occupied." confessed Princess Celestia.

"Is it picking the new Captain of the Royal Guard?" asked Princess Luna.

"That is part of it." answered Princess Celestia nodding.

"It will be difficult to find a successor for Shining Armor." noted Luna.

"I am not too worried." replied Princess Luna.

The Princess of the Sun walked over to the window and stared at the moon.

"I've done this for the past millennium. I'm just glad we can share it." sighed Princess Celestia.

The Princess of the Night walked over and joined her sister.

"As do I. It was cramped in the moon to be honest." said Princess Luna.

The two royal sisters shared a laugh.

"Feeling better?" asked Princess Luna.

"You always know to make me smile." answered Princess Celestia.

"Tell me...what is bothering you?" asked Princess Luna.

Celestia blinked and let out a sigh.

"I am worried about Twilight Sparkle." answered Princess Celestia.

"I haven't noticed anything different." mused Princess Luna.

"Ever since she returned from the Crystal Empire...I've sensed something abnormal." explained Princess Celestia.

"You have know her longer than I." admitted Princess Luna, rubbing her chin her with her hoof.

"I had a previous student...Sunset Shimmer. I sensed something wrong with her. " said Princess Celestia.

"Yet she betrayed you and fled into the mirror." noted Princess Luna.

"I do not wish for Twilight Sparkle to suffer the same fate." confessed Princess Celestia.

"I think Twilight Sparkle will not falter. She reminds me of you, dear sister." said Princess Luna.

"Luna, can you infiltrate Twilight's dreams? Just tell me what dreams she is having and tell me if something is wrong." requested Princess Celestia.

"Understood. I will do so tomorrow night." agreed Princess Luna.

"Twilight...I pray your okay." thought Princess Celestia.