Nineteen years ago, a brain disease known as the Great Madness killed most of the world’s population. The survivors all had something different about their minds. Now, at the start of adolescence, their children enter a trance-like state known as the Changeland and emerge either with special mental powers or as cannibalistic Ferals.
In the great forest of South West Western Australia, thirteen-year-old Arika and her twin brother Narrah go through the Changeland. They encounter an enemy known as the Anteater who feeds on human life. He exists both in the Changeland and in the outside world, and he wants the twins dead.
After their Changings, the twins have powers that let them fight their enemy and face their destiny on a long journey to an abandoned American military base on the north-west coast of Australia…if they can reach it before time runs out.