Lauren Olamina and her family live in one of the only safe neighborhoods remaining on the outskirts of Los Angeles. Behind the walls of their defended enclave, Lauren’s father, a preacher, and a handful of other citizens try to salvage what remains of a culture that has been destroyed by drugs, disease, war, and chronic water shortages. While her father tries to lead people on the righteous path, Lauren struggles with hyper-empathy, a condition that makes her extraordinarily sensitive to the pain of others.