This is the story from long ago Prince Nightblade a alicorn prince who was supposed to become a high prince of equestria but then his father Sombra started to study dark magic and has taken over the crystal empire. in an effort to stop his mother princess Luna from banishing him he gets in the way of the elements of harmony and gets banished himself. only on the day of the empires return was he able to enter back into equestria still in his foalhood. later he meets the CMC and Nyx and become best of friends but an evil thought long defeated will shadow the land and turn everypony under a mind control spell leaving Nightblade, twilight, Scootaloo and Rainbow dash on their own.

i am not discribing the story anymore then that because i don't want to spoil the whole plot haha plot :3