When Audra is imprisoned by Raiden and the Stormers she is forced to sever the bond between her and Vane, while Vane, frantic that he is losing her, can only turn to former enemies to rescue Audra.

While teenaged Vane discovers more of what it means to be a windwalker and his guardian sylph Audra struggles with her deepest desires, both must band together to face greater challenges than they have ever known.

"After a storm in her town, Vivi and her classmates volunteer to help clean up at the beach. When they arrive, the beach looks different from their last visit. Where did the sand dunes and tide pools go? Along with her classmates, Vivi learns about the forces of wind and water--and how those forces constantly change the world!"--