When a witch doctor prophesizes a plague of rabies, Marquis de Casalduero dismisses her claims - until he hears his daughter was bitten by a rabid dog, and the only one to survive.
She appears unscathed - but in a town consumed by superstition, they soon put her survival down to a demonic possession. Only the young priest and exorcist recognises the girl's sanity, but can he convince the town that it's not her that needs healing?