Rainbow Dash finds a maimed, unconscious young colt on the edge of Ponyville and rushes him to the hospital, but nopony knows who he is and something about him seems off...

A young mare prepares to leave her home and set out on her own, but there's a special somepony she needs to speak to first.

Memories of the apocalypse. Power unfathomable. Unseen controllers. History hidden. Fallen tyrants. Vengeful gods. War. Everything is at stake.

Ponies, each with stories of their own, all linked across time by a horrific, unknowable entity. Something terrible is happening... or has it already happened?