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.
A small but growing number of changelings now live openly among ponies. Many ponies are welcoming. Others are concerned. And nobody, from the new Equestrian changelings to the Princesses themselves, knows how Queen Chrysalis is going to respond...