Soren and the Band are back. Coryn has retrieved the ember and it seems a golden age is dawning at the Great Ga'Hoole Tree. But all that is golden in not necessarily good. Soren, Twilight, Gylfie, and Digger face their biggest challenge yet as the young king, haunted by suspicion that haggish blood flows in his veins, hunts for the truth. His wanderings imperil himself and the good guardians who travel with him.

Meanwhile, back at the tree, the influence of the ember is strong- and strange. The tree changes, as do the guardians left to govern in the young king's absence. Otulissa objects to the strange new ways, and her outspokenness puts her in grave danger. Someone must get word to Soren and the Band. But who?