To me, this book highlights the flaws in Lasky's writing for the series. There are characters that have the potential to be interesting due to their internal and external conflict, but that potential is written out before the end of the book. We are left with main characters that feel the same. You could swap Soren, Coryn, Grank, and Hoole's perspectives and the only difference would be the setting. Lasky also attempts to tackle complex problems such as racism, sexism, disability, and trauma, but these issues are portrayed in an extremely two-dimensional, surface level manner. I am aware that these books are intended for children, but these plot lines do little to educate kids further than "this man is abusive and being abusive is bad."
And now to discuss the hardest fumble in the series up to now: Lutta. A half hagsfiend, half owl shape-shifter that was rejected by her parents as a chick. She was created and raised by Kreeth, a powerful hagsfiend who sought the Ember of Hoole to make some sort of powerful dark magic spells. I was excited to see where Lasky would have taken Lutta's plot. She had the potential to be a complex character with a strong plot line about how you are more than your appearance and what you were told to be, but unfortunately her arc was as flat as a table. She is killed within a paragraph and never mentioned again. Lutta dies believing that she is nothing. Her potential was squandered in the most heartbreaking, anti-climactic way possible. Lutta's story is an amalgamation of the worst aspects of the Guardians of Ga'Hoole.
This book still has the redeeming quality of it being fun to read for the most part. The drama is entertaining, and I somewhat enjoy the fragments of worldbuilding we get. Plus, if I was reading for quality, mentally stimulating literature, I would not be reading children's animal xenofiction books like Warrior Cats and Guardians of Ga'Hoole.