After the events of the Royal Wedding between Princess Cadence and Shining Armour, the kingdom of Equestria has never enjoyed more peace.

However, a disgraced unicorn, Trixie, has come to Twilight asking for help at the hint of a threat that will lead to the eventual downfall of the royal family and a civil war of Equestria. It is the actions of Twilight and her friends, of the ashamed and demoralised Princess Celestia and the unduly-feared-if-hardworking Princess Luna, will decide how this ends.

Will the ties between the races of unicorn, pegasus and earth pony hold even in the face of this new threat? Without the ties of the Royals to bind them? Will the other races, long envious of the prosperity of Equestria, see an opportunity?

Will Equestria survive? Or will a new ruler rise up and claim it for her own?