Terror, transsexualism, and an eternal cult film. What is on the mind of horror film director Juan López Moctezuma and his fans, Manolo and Lalo, who are not only obsessed with the Mexican horror film 'Alucarda', but also believe in their hearts that they are its true characters? After finding the director in a psychiatric hospital, they kidnap him to make him remember his gloriously twisted past. An unclassifiable documentary film that uses interviews, stock shots and recreations of a past that may only have existed in the nightmares of its protagonists.
While driving through the kilometer 31 of a lonely road, Agata Hameran hits a boy. She leaves her car to help the victim and another car runs over her and she falls in a deep coma. Her twin sister Catalina telepathically feels the pain of Agata and hears her whispering for help. Together with her boyfriend Nuno and Agata's mate Omar, they return to the km 31 of the road, and find out that the place is surrounded by supernatural accidents caused by the ghost of a mother that lost her boy many years ago. Further, Catalina discloses that the spirit of Agata is trapped between the worlds of the living and the dead.