The series begins less than a year after the beginning of the Occupation. The Bowmans seek their middle child (younger son), Charlie, who was separated from them during the Arrival, while they try to survive with meager resources in a changed world that is constantly dangerous despite its urban veneer of order. Will is forced to work for the Redhats to hunt down the Resistance, or his family will be sent to the Factory. Katie, who is (unbeknownst to Will) a member of the Resistance, now has an inside source in Will.