When Dr. Lillian Whyte learns a nuclear weapon is on the loose in Europe, she collides with a ruthless mercenary from her past. Isolated from her husband, a former CIA operative, Lillian tries to covertly help track the weapon. As she he joins the race to stop the bomb, she is drawn into a deadly game of chase. Despite her efforts, those intent on global catastrophe remain one step ahead of her. As Lillian faces the fears of her past and deadliness of the present, can she secure the future of the world?