Quite unexpectedly, Julie inherits an old, decrepit house in a remote part of Wales. On the spur of the moment, Julie decides to move in but she soon realises that she and her cat are not alone in the house. There seems to be another occupant who she never gets to see. She can't make any sense of the strange and terrifying things which happen and which drive her to the brink of insanity. Eventually, Julie understands that she is caught in a cruel game, and there can be only one winner. Will it be her?