Brimming with danger and magic, this new fantasy adventure from acclaimed author MarcyKate Connolly will leave readers breathless as Aria discovers the strength of her courage—and the power of friendship.

Aria grew up in a castle, among the clouds with creatures of the air. She spends her days racing and soaring through the sky with her best friend, Gwyn, a young gryphling. At night, she falls asleep to the music of the Wind. 

One day, the Wind vanishes, taking all Aria holds dear with it. Aria and Gwyn go on a desperate search, only to discover the Wind has been kidnapped by a sinister alchemist named Worton. 

Nothing will keep Aria from rescuing the element who raised her— not a riddle, not a quest, not a race against time. Except Worton can't be trusted, and the Wind is not the only one in grave danger...