A meteor impacts the nation of Equestria, Planet Equis. Tranquility is quickly snuffed out when a poison begins to spread violently. The Princesses cannot combat this unknown threat, as no knowledge of it exists. Help comes from an unexpected source.
Sequel to The Dark Ones. Twilight Sparkle now serves the Imperium of Man in its war against those who destroyed her home. But when her buried past looms large, what will become of this last little pony?