"It's unlike Princess Celestia to just leave like this! Something has to be wrong, what if she was kidnapped? Or maybe she has really bad gas... What if she was actually evil all along and she's using Equestria as a safe haven to hide from the enemies of her past? What if Celestia just wanted to go for a walk?
Oh!
I know!
Maybe she's possessed, like Luna was by Nightmare Moon... Hmm...
She's probably got gas."
~Pinkie Pie

All is not as it seems.

Art: Solar Flare by Girlsay of DevientArt