Rainbow Dash is well known about being a competitive pegasus. She is an amazing atheletic mare who can accomplish anything. Well, almost anything. She wants to have a competition about rock related challenges. What not a better pony to challenge than Pinkie Pie's sister, Maud Pie. Rainbow knows that Maud is a rock expert, but she couldn't possibly be good at actually doing stuff with rocks, right? There's only one way to find out. In order to be the best, you have to beat the best.

But will there come a time where Rainbow will struggle? Is Maud a lot more talented with rocks than she expected? Is Maud really the rock expert?