Dry Wall is the most successful architect in all of Equestria. He accomplished this within fifteen years since graduation from the University of Canterlot.
Impossible for any pony. Unfortunately, Wall is an insomniac. His caring friends forced him on a vacation, where he slept for the first time... and dreamed.
The dream was more or less a disturbing vision that inspired a pilgrimage. Teaming up with a mysterious mare, Dry Wall must find the one pony who knows the secrets.

... Man, that sounded freakin' cheesy.

Can be considered a sequel to Cognitive Dissonance.