In this novel that unites characters from "The Giver" and "Gathering Blue," Matty, a young member of a utopian community that values honesty, conceals an emerging healing power that he cannot explain or understand.

Hopper escapes a pet shop and soon finds himself in the tangle of Brooklyn's transit tunnels in Atlantia, a utopian rat civilization where Hopper is treated as a royal guest until a multi-generational and multi-species battle breaks out and Hopper learns terrible, extraordinary secrets, including one about his destiny.

"Founded by the mysterious genius known as the Designer, the archipelago of Prospera lies hidden from the horrors of a deteriorating outside world. In this island paradise, Prospera's lucky citizens enjoy long, fulfilling lives until the monitors embedded in their forearms, meant to measure their physical health and psychological well-being, fall below 10 percent. Then they retire themselves, embarking on a ferry ride to the island known as the Nursery,...