Broad Plain Darkening

The safe world of the Pale is under threat.
Inside the policosmos, the new Regent Adaeze strives for dominance over the all-powerful Senior Forecaster, but the Pale's humachine citizens are unaware that their city is close to collapse.
Outside on Broad Plain, the exiled human Hector undertakes a dangerous trek to find a safe haven for the orphaned twins.
How can anyone survive as their world shifts underneath them?