October 2559. With the galaxy in the suffocating grip of a renegade artificial intelligence, another perilous threat has quietly emerged in the shadows: the Keepers of the One Freedom, a fanatical and merciless Covenant splinter group, has made its way beyond the borders of the galaxy to an ancient Forerunner installation known as the Ark. Led by an infamous Brute named Castor, the Keepers intend to achieve what the Covenant, in all its might, failed to: activate Halo and take the last steps on the path of the Great Journey into transcendence.

With the invasion of Dara complete, and the Wall of Storms breached, the world has opened to new possibilities for the gods and peoples of both empires as the sweeping saga of the award-winning Dandelion Dynasty continues in this third book of the “magnificent fantasy epic” (NPR).