In this terrifying true story| something beyond comprehension is happening to housewife Anna Ecklund. Once a mild mannered churchgoer| she is now prone to bouts of 　　violent rage with a particular anger toward religious imagery. Desperate to find a cure for Anna"s disturbing behavior| her husband calls on doctors and 　　psychiatrists to provide a diagnosis. But when no rational explanation can be found| local priest Father Riesinger teams up with Vatican investigator Father Lamont 　　to evaluate the case. Realising that Anna is inhabited by a malevolent entity| the priests take her to a nearby Convent to perform an Exorcism. But all hell breaks 　　loose and a brutal battle between good and evil begins.在这个可怕的真实故事中|家庭主妇安娜·埃克伦德发生了难以理解的事情。她曾经是一个温和的教徒|现在她容易发作对宗教意象特别愤怒的暴力愤怒。急于找到安娜令人不安的行为的治疗方法|她的丈夫请医生精神科医生提供诊断。但是当找不到合理的解释时|当地牧师里辛格神父和梵蒂冈调查员拉蒙特神父联手来评估这个案子。意识到安娜居住着一个邪恶的实体|牧师带她去附近的修道院进行驱魔。但是所有的地狱都破裂了一场正义与邪恶的残酷战争开始了。