Ten years after devastating nuclear war, sixteen-year-old Hayden is used to the blinking lights and meager meals of his bunker. But when the administration inexplicably abandons a years-in-the-making plan to emerge and rations plummet, Hayden itches for an excuse to leave. It comes in human form when Brita, a mysterious girl with no long-term memory, stumbles upon their bunker and proves the outside’s survivability.