Human civilization ended on May 23, 2015, when everyone on earth became a pony. This is the story of how they lived, how they died, and what they achieved.
After the events of Project: Sunflower, Erin returns to Ponyville to study magic. Meanwhile, something is stirring on the newly-discovered world of Harmony.
Twilight’s trip to Earth and friendship with the humans brings new friends and enemies to her peaceful world. With the specter of war hanging over them, Equestria will have to form an alliance like no other to fight the menace from the void.