The film is inspired by the Crying Woman legend (la Llorona) and legends about highways ghosts (very popular in México). While driving one night through the forests near Mexico City, Agata Hameran (Iliana Fox) has a terrible accident on kilometer 31 in which she loses her legs and falls into a coma. After that horrible night, her twin sister Catalina (also Iliana Fox) begins to feel a strong psychic connection with her sister, as Agata seems to be...