"Enraged by his clash with Soren and driven by and 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."--P. 4 cover.

Wishing to fight off evil that exists among the owls of the Great Ga'Hoole Tree, Soren, Gylfie, Twilight, and Digger must endure harsh training from the elders to become Ga'Hoolian owls, and carry out their good deeds.

While Coryn and his companions journey to a wintery realm where mysterious owls live, the king becomes the target of an assassination plot and it is up to Primrose and Eglantine to save him.

Soren, Twilight, Gyfie, and Digger face their biggest challenge yet as the young king, haunted by suspicion that haggish blood is within him, hunts for the truth; meanwhile, the ember that Coryn retrieved, causes the tree and the guardians to change.

Nyroc, the son of Kludd and Nyra, is destined to take his dead father's place as leader of the Pure Ones and to wreak vengeance on Soren, but as the light of goodness dawns in his heart, Nyroc begins to doubt all that he as been taught.

When Soren, a barn owl, arrives at St. Aggie's, a school for orphaned owls, he suspects trouble and with his new friend, a clever elf owl named Gylfie, embarks on a perilous journey to save all owls from the danger at St. Aggie's.

When the Striga, a mysterious owl from the Middle Kingdom, takes over young King Coryn's mind and institutes a tyrannical new regime, the Band, exiled for their loyalty to Coryn, seek to free him and the kingdom from this threat.

It's an exciting time in Fairyland where everyone is preparing for the Fairy Olympics, but Jack Frost's goblins have stolen the Sports Fairies' magic objects and are threatening to take over the whole competition; Rachel and Kirsty's help is seriously needed to even the score!

Using their magic tree house, Jack and Annie travel back to the time of the American Revolution and help General George Washington during his famous crossing of the Delaware River.

While everyone in Fairyland is getting ready for the Fairy Olympics, Jack Frost's goblins steal the Sports Fairies' magic objects, and Rachel and Kristy are determined to roll away with Zoe's magic shoelace.