Dr. Miranda Grey is a psychiatrist who works in a penitentiary, in the mental institution sector. She is married with Dr. Douglas Grey, the chief of department where Dr. Pete Graham also works. Chloe Sava, a patient of Dr. Miranda formerly abused by her stepfather, claims that she is frequently raped by the devil in her cell. After leaving the asylum in a stormy night, Dr. Miranda has a car accident, and when she wakes up, she is an inmate of the institution, being accused of an horrible crime and having no memory of the incident.