Maud Pie just seemed so...bland. She liked rocks. She ate rocks. She had a pet rock. Even her fur was a reflection of the color of a gray rock.

At least, that is what Pinkie and her friends see.

Now, the mystery of just who Maud Pie is will be revealed. Who can move so fast and break rocks with their bare hoof? Surely, she has a reason for being so strong. And anyway, how can ANYPONY be so bland having grown up with Pinkie? And no doubt, she has a secret that no pony will see coming. Questions arise but will there be answers to them?