Retreating from an airborne virus with a uniquely unsettling symptom, property developer Jason escapes London for his country estate, where he is forced to negotiate a new way of living with an assortment of fellow survivors.

Far in the future, an isolated community of descendants continue to farm this same estate. Among their most treasured possessions are a few books, including a copy of Jane Eyre, from which they have constructed their hierarchies, rituals and beliefs. When 15-year-old Agnes begins to record the events of her life, she has no idea what consequences will...