This was my favorite book in the whole series! It wasn't really exciting until the end, to be honest though.

I read this book a long time ago and I still remember it as a really good book.

It was an amazing book, and it was so exciting! Tensions erupt in the owl kingdom when the forces of evil wage war against the protectors of good. Enraged by his clash with Soren and driven by an all-consuming desire for power, Kludd and his group, the Pure Ones, launch an attack upon the Great Ga'Hoole Tree. The noble owls who live there must fight fiercely to protect their resources and defend their honor. Meanwhile, Soren is called upon by the elders of the great tree to lead a mission back to the one place he thought he'd never see again - St. Aegolius Academy for Orphaned Owls. He and his crew will have to enter St. Aggie's as spies, then leave unnoticed once their work was done. Soren escaped the rocky confines of St. Aggie's once. If peace is to be restored, he must do it again.

Ever since Soren was kidnapped and taken to the St. Aegolius Academy for Orphaned Owls, he has longed to see his sister, Eglantine, again. Now Eglantine is back in Soren's life, but she's been through an ordeal too terrible for words. And Ezylryb, Soren's mentor, has disappeared. Deep within Soren's gizzard, something more powerful than knowledge tells him there is a connection between these mysterious events. In order to rescue Ezylryb, Soren must embark on a perilous quest. It will bring him face-to-face with a force more dangerous than anything the rulers of St. Aggie's could have devised - and a truth that threatens to destroy the owl kingdom. Unfortunately, Kludd is METAL BEAK! NOOOOOOOOOOOOOO!