Orphaned by the Border Wars, Alina Starkov is taken from obscurity and her only friend, Mal, to become the protegé of the mysterious Darkling, who trains her to join the magical elite in the belief that she is the Sun Summoner, who can destroy the monsters of the Fold.
Severity reflects intensity, not value — “central theme” means a warning is a core part of the book, not that the book is bad.