Welcome to the Arcadia. Once a luxurious cruise ship, it became a refugee camp after being driven from Europe by an apocalyptic war. Now it floats near the coastline of the Federated States -- a leftover piece of a fractured USA. For forty years, residents of the Arcadia have been prohibited from making landfall. It is a world of extreme haves and have-nots, gangs and make-shift shelters. Esther is a loyal citizen, working flat-out to have the rare chance to live a normal life as a medic on dry land. Ben is a rebel, planning something big to liberate the Arcadia once and for all. When events throw them both together, their lives, and the lives of everyone on the ship, will change forever.