A terrible mistake causes the western nation of Brismania to undergo a deavestating disaster. The question is, will a band of five ponies be able to stop it before it destroys Equestria too?

Barzano's had a fine life as an astronomer pony, being on a mountain and all, but something is missing. He enjoys his work, but for the first time, he feels lonely. An unexpected guest shows up, bringing him on the adventure of a lifetime.