In the second book in the Guardians of Ga'Hoole series, Soren, Gylfie, Twilight, and Digger travel to the Great Ga'Hoole Tree, a mythical place where an order of owls rises each night to perform noble deeds. Soren and his group are seeking help to fight the evil they discovered in the owl world (in Guardians #1). After a harrowing journey, they arrive at the Great Ga'Hoole Tree and learn they will need to stay to receive training from the Ga'Hoolian elders. During his time at the Great Ga'Hoole Tree, Soren finds (and then loses) a great mentor and he is reunited with his beloved sister.
1. A Mobbing of Crows
2. In the Company of Sooty Owls
3. Twilight Shows Off
4. Get Out! Get Out!
5. The Mirror Lakes
6. The Ice Narrows
7. This Side of Yonder
8. First Night to First
9. A Parliament of Owls
10. Twilight on the Brink
etc.