In the Vellum—the vast realm of eternity on which our world is just a scratch—the unkin are gathering for war.

In the Vellum, a fallen angel and a renegade devil are about to come to blows.

In the Vellum, blood magic made in hell is about to come face to face with nanotechnology forged in heaven. Past, present and future will collide with other worlds and ancient myths.

And the Vellum will burn.