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.

Ten years after surviving the tornado that killed his parents, Vane Weston, now seventeen, has no memory of that fateful day but dreams of a beautiful girl who, he now learns, is not only real, she is his guardian sylph, who harnesses the power of the wind.