Maria Rossi (Suzan Crowley) telephones the police to confess to slaying three members of her church group during her exorcism.
She is spirited away to Centrino Mental Hospital in Rome. Twenty years later, Maria’s daughter Isabella (Fernanda Andrade) makes a documentary about exorcisms to better understand the dark forces
that supposedly took hold of her mother.
The exorcism of young Rosa Sorlini (Bonnie Morgan) in a dingy basement persuades Isabella to set up a similar procedure for her mother.