(This story takes place after season 4)

Princess Celestia has been ruling Equestria for quite some time and decides she needs a long overdue vacation. So she creates a plan to have one of her royal guards take her place, an introvert named North Star. He is a simple royal guard who simply never really did much in his life and didn't have much going for him. He was a perfect candidate as nopony would miss him, and his absence would be hidden under the guise of a "secret assignment." North Star accepts and goes through the transformation, turning into a copy of the princess in almost every way. The truth is he feels more alive as the princess and decides that he should try living a little as her. But he also has to realize anything he does will reflect back on the real Princess Celestia and, most of all, he cannot expose her absence.

Secrets and mystery are all that lies in the ancient lands surrounding Somnambula. Ever since the city was buried all those centuries and millennia ago, creatures have ventured across the scorching sands to discover relics and treasure long since lost. Generations of adventurers and archaeologists have trekked and dug through mountains of yellow-brown sand, hounded by the blazing sun and ever scarce water supplies. With the return of the ‘Pillars of Old Equestria’, however, recent information about the ancient world has come to light. Eager to capitalise on the discovery, Daring Do has fore fronted an expedition to uncover an ancient monument, inviting Rainbow Dash to accompany her on this journey of discovery. However, this journey will become quite literal for the prismatic pegasus, taking her to a place both alien and familiar…

This story was written for an anonymous commissioner.

Fetish/Questionable material contained within includes:
-Fat
-Gradual Weight Gain - Skinny to Immobile Blob
-Gradual mental alteration
-Gradual slob - Sweat, burping, messy eating eventually leading to more extreme slob in the last two chapters (farting)