When Aria is exiled from the enclosed city of Reverie, she forms an unlikely alliance with an Outsider named Perry, who could be her only chance of survival providing they can overcome their prejudices.
Hoping to be reunited after months of separation, Aria and Perry are met with hostility by Dweller-resenting Tides before a Aether storm threatens the tribe's existence, forcing Aria to consider leaving Perry to save both their lives.
"In their effort to reach the fabled Still Blue, Aria and Perry will have to rescue Cinder, defeat Sable and Hess, and unite the Dwellers and the Outsiders once and for all"--