The Enigma

Chapter 5: Sanity is not Pink

"Pinkie Pie should be here, and if we're lucky, maybe Rainbow Dash! We come here pretty often, actually." Fluttershy explained as they walked up to Sugar Cube Corner.
"I still feel like something bad may have happened to Rainbow Dash. That'll seem even more true if none of your other friends have seen her in a while either!" If something has happened to Rainbow Dash, it would be amazing if I saved her! Being in her debt would be cool! But... Maybe Fluttershy is right, what are the chances Rainbow Dash is in trouble... Buttercup thought.
"Buttercup, nothing has happened to Rainbow Dash."
"Why don't we just go to her house?"
"She spends most of her time in Ponyville, it's quite unlikely she'd be at her house."
"Hm."
They walked into SCC, and Buttercup immediately noticed a messy-haired overly-happy pink pony standing behind the counter.
"Hey Pinkie."
"Hey! Who's the little filly?" The pony continued to smile, and it began to creep Buttercup out. I've never seen somepony so happy... It's like one of those horror shows where there's a pony who's so happy, but there's something extremely odd about them. Also they usually go insane and kill ponies.
"This is Buttercup. I'm fillysitting her."
"Oh! Fox Shine's adopted daughter! Oh, of course! It says that in Chapter 1! Silly me!" Pinkie burst out laughing.
Buttercup cocked her head. There's the odd part. "Umm... What?"
"Don't you remember? It said: Chapter 1: A Short Chat and Fluttershy was talking with Fox Shine, then he left to go to his work, and then Fluttershy was talking to you!"
"...Your talking as if this a book or something." Ok, so she's even odder than the ponies in the horror show. She must hold a world record for Most Nonsensical Pony Ever.
"Oh, this isn't a book! It's a Fanfic!"
Even Fluttershy looked confused. "A... Fanfic?"
"Oh, never mind! Anyway, let me think for a second... Oh! Chapter 2, you thought of the idea to introduce her to Rainbow Dash! But you can't find her, because later in Chapter 8... Oh! Well then... Chapter 5... I'm supposed to say... Oh! Ok..." Pinkie changed her expression. "Rainbow Dash? I haven't seen her in over three days!"
Buttercup noticed Fluttershy seemed to pretend like everything before that was never said. I'll... Just do the same. Buttercup thought.
Fluttershy pondered the statement for a while, before saying. "That's odd... Nopony seems to have seen Rainbow Dash in quite a while."
"See what I've been sayin' Fluttershy? She could be in some sort of trouble!"
Hey, wait... Pinkie said something about "later" in Chapter 8, something about Rainbow Dash. She also said this was Chapter 5, so maybe she can tell us what happened! Wait, no... She's insane! And now I'm thinking like a mad pony too!
"Hey! I'm not insane!" Blurted Pinkie.
"But you-... Wait... How did you...?"
"Hey Fluttershy! Maybe the filly is right!"
Fluttershy gave Pinkie a confused look. "You mean... Maybe you really are insane? I didn't hear her say that, but-"
"No, not THAT! Maybe Rainbow Dash IS in trouble! We need to look for her!"
Well, maybe she DOES have some sense in her.