Slate has been on his own since a foal. As a member of the forgotten race of 'deep earth' ponies existing far in Equestria's under ground, he feels the earth's call inside him, leading him by instinct to where he needs to be so the rock can be shaped. Slate finds himself called ever upward toward the pony who unknowingly changed the course of his life, and when he reaches the surface his life will be forever changed by the wonders and ponies that he finds.

Rainbow Dash wants to hangout with Pinkie. Always-up-for-fun Pinkie Pie. Except just right now on this particular day she's not. She's lurking under her blankets and grumbling. Not just a day, but a grumpy day.

Well.

Rainbow Dash can't be having with this sort of thing. Time to give Pinkie Pie a piece of her mind.