Spiritmoon and her brother Jinx have been in an orphanage their entire lives, never knowing who their parents are. Everything changes when they go to public school for the first time, where Spiritmoon meets an enemy on her first day. She and Jinx try to live a normal life, though it can be hard when one has wings and a horn, and one has no cutie mark. Suddenly the princesses announce they are moving back to their old village in search of other alicorns. Who will be the heirs?