On Gullstruck Island the volcanoes quarrel, beetles sing danger and occasionally a Lost is born . . . In the village of the Hollow Beasts live two sisters.

Arilou is a Lost - a child with the power to depart her body and mind-fly with the winds - and Hathin is her helper.

Together they hide a dangerous secret. Until sinister events threaten to uncover it. With a blue-skinned hunter on their trail and a dreadlocked warrior beside them, they must escape.

Can the fate of two children decide the future of Gullstruck Island?

Discover a dazzling world, a breathtaking heroine . . . and an incredible adventure!