Pinkie Pie is heralded as the most gleeful, fearless, and eccentric pony in Equestria. Who is Pinkie Pie, though? What runs through her mind when she's alone? Everyone has fears, after all, and everyone has nightmares.
And the greatest nightmares are the ones that are true.

Sometimes, we all need company. Big Mac found his in the form of a doll — a filly's mere toy. She provided companionship as an inanimate object, but now, it's not enough. Big Mac attempts to find a way to transform her into something more capable of understanding, but when he does, will he be able to make the ultimate sacrifice to see it through?