My little pony / Cook, Katie

Big McIntosh has an unexpected adventure at the Summer Wrap-Up Festival and Hoedown. Also, Shining Armor and Princess Cadance describe how they met.

When everybody starts acting strange, Pinkie Pie, Rainbow Dash, and some of the others realize that ponies are being replaced by changelings and they manage to save the town, but find that Sweetie Belle, Apple Bloom, and Scootaloo are missing.

When the inhabitants of Ponyville start acting strangely, it is up to the ponies to figure out what is going on.