Norah Benson, an affluent socialite living in the upper east side of New York, seems to be living the perfect life as a divorced mother of two. After her mothers suicide, she becomes a mother figure in the close relationship she has with her younger brother Joel Delany. However, Joel begins to a act very unusually: he tries to attack a man, has to be restrained to a mental asylum, and begins to loose his usual free-spirited kindness in exchange for a turbulent personality. After witnessing the acts of her brother and finally breaking down the shield of her affluence and naivety, Norah seeks the help of a spiritismo who will attempt to exorcise the spirit of a murderer they believe to be possessing Joel. But before they can attempt to help her, Norah's brother quickly turns on her, threatening her own life and the lives of her children.