There was a time when the El Salto de Juanacatlán waterfall was considered the Niagara Falls of Mexico for its beauty and crystal-clear waters. The growth of industry in Guadalajara and the incessant pouring of toxic and chemical substances into the Santiago River have devastated this once pristine area, which now also poisons the town itself. For 30 years a family: Graciela, her husband Enrique, and their daughter Sofía, have dedicated themselves to fight against the indifference of the authorities and the impunity of corporations to rescue what was once a river full of life.