In a dangerous, devastated New York, one 16 - year - old Australian boy finds himself alone ... It's now or maybe never - sixteen year old Jesse has spent eighteen days in post - apocalypse New York, waiting for help that never comes. He owes it to his new friends, Rachel and Felicity, to go beyond their temporary refuge to find other survivors who may hold the key to escape. Could the collective at Chelsea Piers have the answers or prove to be just another distraction in his quest? Meanwhile, Jesse is burdened with guilt and sadness at the fate of his other friend, Caleb, who has fallen prey to the virus and become a Chaser. So when it emerges that a cure - all serum may be available, Jesse determines to secure it to save his friend. At any cost - perhaps even his own future.