True story of Minerva, Patria, and Maria Teresa Maribal -- three sisters known in the Dominican Republic as "Las Mariposas" ("The Butterflies") -- who became freedom fighters rebelling against the dictatorial regime of Rafael Leonid Trujillo during the 1950s. Leaving a life of comfort, three of four Maribal sisters were persecuted, incarcerated many times, and finally brutally murdered as a result of their political activities in 1960. Following their deaths, the sisters became the inspiration for the revolution which resulted in Trujillo's assassination in 1961.