A child is witness to an assault on a monk by the gang of Lorenzo the Fifth. The monk escapes and takes refuge in the estate of Doña Carlota, a countess who lives with her son Juan and daughter Beatriz. Basilisa, the maid, conjures the devil to free her son from an irreversible illness, but to do so the evil must be transmitted to an innocent soul, and for that she chooses Beatriz. The child begins to be the victim of a possession, for which everyone blames the monk.
as Doña Carlota
as Basilisa
as Fray Ángel
as Máximo Bretal
as Beatriz
as Saludadora
as Rata
as Juan
as Tres Dedos
as Gondarín
as Pelos
as Cepillo
as Cristamilde
as Herrero
as Voz en off (uncredited)
