Ay Mariposa tells a story of three characters in the Lower Rio Grande Valley of Texas whose lives are upended by plans to build a USMexico border wall As the director of the National Butterfly Center Marianna Trevino Wright has become a leader of wall resistance in the Valley a position that has resulted in violent threats from prowall factions and an emotional odyssey as she tries to navigate the evershifting sands of border policy Zulema Hernandez a lifelong migrant worker immigrant and great grandmother has been a dedicated advocate for all migrants both wild and humankind Meanwhile the butterfly la mariposa fights its own daily battle for survival in a landscape where more than 95 percent of its habitat is long gone and much of what remains lies directly in the path of the wall Ay Mariposa documents each characters fierce commitment to home justice wild beauty and the future of the USMexico borderlands