In the quiet family town of Suburbicon during the 1950s, the best and worst of humanity is hilariously reflected through the deeds of seemingly ordinary people. When a home invasion turns deadly, a picture-perfect family turns to blackmail, revenge and murder.

Jimmy is a committed child psychologist who uses his own playbook, but when he is brought in to work with Ellie, he is completely unprepared for his subject—a 9-year-old psychopathic genius with nothing to lose. As he begins to understand the extent of her capabilities and the fate that has been planned for her, he struggles to overcome her defenses before it is too late for them both.