Several months have passed after Discord's sudden disappearance. With the Bastion destroyed Kid agrees to live with Rucks and Zia in Ponyville. With the help of Twilight and her friends, he hopes to begin learning what else the world has to offer.

Clean-up of the Bastion by the royal guard has been going well, but the main island seems to have been kept off-limits. Nopony knows why, but shortly afterwards strange things have been happening in the forests near Trottingham. The same forest the Bastion crashed into.

Meanwhile, Equestria remains oblivious of the Unrest in the frozen reaches to the north as an enemy that only kid knew has returned. It will take the courage of a single human, and the strength of an entire nation to push back the invaders.

But it will take the magic of friendship to stop a rivalry Kid has long since forgotten.

(Sequel to the story: An island built in the sky)