Underserved and ignored, undocumented immigrants with medical issues often end up in emergency rooms for care, a costly last resort in which patients can be charged thousands of dollars for little more than an aspirin. Filmmaker Maxim Pozdorovkin ('Pussy Riot: A Punk Prayer') shines a well-deserved light on Puentes de Salud, a health-care clinic serving a population that all-too-easily slips through the cracks. As it plans a larger facility to accommodate its rapidly increasing demand, Puentes' executive director Dr. Steve Larson and his team must find a way to keep their practice running in spite of numerous obstacles.