Her entire world confined to its spaces, she's never thought to dream of what lies beyond its doors. So when her mother goes missing, Aria knows her chances of surviving in the outer wasteland long enough to find her are slim.Then Aria meets an outsider named Perry. He's searching for someone too. He's also wild—a savage—but might be her best hope at staying alive.If they can survive, they are each other's best hope for finding answers.

    Kirit Densira cannot wait to pass her wingtest and begin flying as a trader by her mother's side, being in service to her beloved home tower and exploring the skies beyond. When Kirit inadvertently breaks Tower Law, the city's secretive governing body, the Singers, demand that she become one of them instead. In an attempt to save her family from greater censure, Kirit must give up her dreams to throw herself into the dangerous training at the Spire, the tallest, most forbidding tower, deep at the heart of the City.As she grows in knowledge and power, she starts to uncover the depths of Spire secrets. Kirit begins to doubt her world and its unassailable Laws, setting in motion a chain of events that will lead to a haunting choice, and may well change the city forever - if it isn't destroyed outright.