After buying it for a good price, a couple and their young daughter move into a house that was the scene of a macabre murder. A series of terrifying events eventually force them to flee for their lives, but all is not as it seems.

An elderly pet shop owner who is secretly a former Nazi concentration camp guard, intent on continuing experiments on human victims. His plan is to create prisons with no bars, for which he captures a former prison inmate and his wife.