Bourne of Seale, a junior mage from the Floating School, meets Nepenthe in the library with a book inscribed with an unknown language, which seems to be written in configurations of plant thorns.
On the surface, it appears to be an epic poem documenting the conquests of Axis and Kane, an emperor and "the Hooded One", three thousand years earlier.
The final words of the book open the Gates of Time that admit Axis and Kane, Nepenthe's parents, and their uncountable legions of followers near Raine, three thousand years in their future.
When Queen Tessera learns of the planned invasion, with the help of Vevay, her own mage, and the magicians of the Floating School, she uses magic to make Raine seem a dilapidated ruin and thereby protect it from Axis.
In this magical world blissfully free of bias, people are simply themselves, equally intelligent and witty and thoroughly capable while prone to the occasional error, in a manner that transcends feminism and becomes a celebration of essential humanity.