Beatriz 1976 In the woods, a boy named Juan witnesses the Lorenzo el Quintos bands assault on a mysterious friar, who manages to escape after killing several of his attackers and takes refuge in the manor where the boy lives with his mother the Countess Dona Carlota and her sister Beatriz Basilisa, their servant, conjures up Satan to free her son from an irreversible illness, but for that the evil must be transferred to an innocent soul and she chooses Beatrizs The young woman becomes the victim of a possession, for which everyone blames the friar