Meanwhile, St. Aggie's has fallen to the Pure Ones. If they are not stopped, they will launch another, more deadly attack against the great tree. And without allies from the north, Ga'Hoole will surely fall. Soren's mission must succeed. And the final battle must be won. The coming conflagration will demand wisdom, bravery, and sacrifice from all the owls of the great tree, and from Soren and the band, nothing less the heroism.