During the 1950s, Patria, Minerva, and María Teresa Mirabal – known as "The Butterflies" – formed a secret resistance group fighting against Rafael Trujillo, the dictator of the Dominican Republic. In November 1960, Trujillo ordered their assassination. These killings transformed the Mirabal sisters into national heroines and symbols of feminist resistance. The documentary combines interviews with more than forty people who knew the sisters – family, friends, fellow activists, teachers, and their surviving sister, Dedé – with dramatic recreations and historical footage.