When Rainbow Dash and Pinkie Pie are going on a short picnic, they find themselves exploring a part of the Everfree Forest that no one has ever touched in years. After enjoying some cupcakes that Mrs.Cake made special for this occasion, the two mares noticed something glowing in the trees. In a fit of giggly laughter and excitement, Pinkie Pie leaped for the rainbow colored glow, finding only a unusually shaped rock. The rock was rather round, but crudely shaped as if it came from the sky. Even with all of Dashie's attempts to stop Pinkie, She set the rock off, causing a burst of colors and confusion when they look into the water to see only a single pony!