3000 years ago (aka present day), the earth suffered from "the Cataclysm" - an apocalyptic event that changed the literal shape of the earth (because earthquakes) as well as all of its political structures. In this future version of earth, technology has been all but outlawed, and magical folks are treated in a vastly superior way to those without magic. Hob Smythe is a non-magical miner living in the Dusk (outside of present-day Vancouver) who is recruited by a secret society called The Fellowship that wants non-magic folks to have the same rights as magic folks. He is quickly whisked away to the capital (Impyrium) where he is to spy on Hazel Faeregrine - the princess third in line to the throne that the Fellowship suspects is massively powerful. Meanwhile, Hazel is trying to learn how to wield her great magical power, while maneuvering and investigating interesting goings on in the palace.
As you can probably tell from that description, there is a lot of world-building that happens in this book. As a result, the beginning is a little slow, but after a few chapters, I found myself engrossed. Neff creates a dynamic world full of magic, demons, and dragons. The characters themselves are intelligent, likable (if a little gullible), and independent. If you like your heroes with pluck, you'll love Hazel and Hob. The story, once it gets going, is fairly complex, but in a really great way. There's a lot of plotting and conspiracies and it's really fun to try to figure out what is happening along with Hazel and Hob. A lot of little threads are introduced, and many plot points are tied up in the end while still paving the way for the next installment in the story. Additionally, there is fun social commentary in terms of non-magic vs. magic folks and their respective treatments.
I liked this enough that I immediately put the author's companion series, which is called The Tapestry and tells about the events of the Cataclysm, on hold. This is probably my favorite non-sequel middle grade read of the year. Recommended for fantasy readers of all ages. 4 stars.