Weakened by their terrible encounter with Borneheld's men, Axis and his army are forced to march north as Gorgrael breaks through Jervois Landing and invades tencendor with ice and terror. But under a sky black with Gryphon, Axis discovers that he's confronting a seemingly invincible enemy. As the Prophecy of the Destroyer hurtles towards fulfilment, Azhure and StarDrifter unravel the mysteries of the Island of Mist and Memory, where they finally confront WolfStar; Faraday moves east to re-plant the ancient forests of tencendor; and the Sentinels begin a lonely journey planned for them thousands of years ago. Enveloping all looms the promise of treachery - treachery that threatens to strike into the very heart of Axis and Azhure's family.