A young couple on a weekend getaway inadvertently intrude on a criminal couple's remote hideout, triggering a violent battle for freedom. Escape attempts, shifts of power, relationship issues and a looming secret fuel this confrontational encounter.

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.