When Ghost decides he actually wants to attend school with Applebloom, what new discoveries will he make about ponykind? What struggles will he face as a Changeling hidden among ponies? He will need to learn how to survive among others his age, along with making new friends along the way.
This is a side story to 64 vs. The Underground. While 64 is over in Gryphon Kingdom, Ghost is still in Ponyville living with the Apple Family.