When the Changelings attacked for a second time, pony rule in Equestria was reduced to Canterlot, ruled temporarily by Twilight Sparkle. Inside the castle walls, Twilight and her subjects have managed to hold on against Chrysalis' hordes, but they can only last for so long.

Sweetie Belle, loyal servant to Princess Twilight and the only adept political mind the ponies have, is sent overseas to unknown lands, in hopes of recruiting other nations to fight for Equestria. However, when things go awry, Sweetie Belle finds herself lost in a new land with new allies, foes, and what might be the only thing that can save Equestria: dragons.