This documentary addresses some of the first cinematographically documented actions of Mexican indigenous politics in the mid-20th century. The narrative thread is built from the experiences of the first indigenous workers: medical personnel, specialists in engineering or agronomy and indigenous promoters. The film accounts for two key moments of the time: the foundation and start of operations of the first Indigenous Coordination Center created by the National Indigenous Institute (INI), in San Cristobal de Las Casas, Chiapas, and the relocation process of the chinanteca and mazateca communities affected by the construction of the Miguel Aleman dam.