The Fall precipitates everything that happens in A Quest of Queens: it is the destruction of the Magic City, the Great Crystal, and the breaking of the High People's reign over Midworld.
This cataclysmic event not only shapes the world into a world of ruin, but sets the mood for a campaign that is about restoring hope in the world when all seems lost.
After the Fall, the Lords' Alliance is broken when the Emperor Gazreth embarks on his quest of world domination. The campaign can be set at that very moment, or years after the nascent empire has created its strangehold over Arcadia. Ancient forces that have been kept at bay by the watchful eye of Muraius and the contained power of the Great Crystal are suddenly freed, which makes the world a very dangerous place.