On the surface, this debut feature by writer-director Florence Jaugey is about a girl boxer, Yuma (Alma Blanco), struggling to escape the barrios of Managua. She lives in a concrete-floor shack with her often-absent mother, unemployed pedophilic stepdad, teen junkie brother, and two younger siblings. She loves and protects the children but despises the adults. Meanwhile, outside her home, Yuma's street thug boyfriend, Culebra -- whose name means "snake" -- tries to control her, saying, "Women don't box." But Yuma is wild and tough. She continues training and soon starts an affair with Ernesto, a middle-class journalism student at Universidad Centroamericana.