"Stay on guard. Be aware of your surroundings. Notice the nuances. Cover your tracks. Always be prepared. Question everything. This is how you stay alive, Joy. And this is how you keep the ones you love alive."
Sixteen-year-old Joy Montgomery, daughter of Zephyr the Magnificent, the great magician, can only reminisce of better times. Before the Superiors. Before the uprisings. Long ago. Before the dying Earth ripped the family she loved away from her.
In this desolate dystopian future, the Greenleigh orphans are “privileged” with the task of building mechanical trees for Bygonne, so their world behind The Wall can breathe another day, and so the Superiors may continue their malevolent reign.
Lured by a yearning for freedom, tenacious curiosity, and hunger for adventure, Joy discovers hope and magic amid the misery, and power in her promise to care for those remaining, whom she loves enough to risk her life for. To save them, herself, and the boy she adores from the abuse and slavery by the Superiors, Joy must entrust the aid of an unlikely ally who harbors a dangerous secret.
With an intriguing stranger at the helm, Joy and the treemakers embark on an intense and terrifying, yet liberating quest for the truth about the existence of the forbidden paradise beyond The Wall.