Nervous bride-to-be Diana Markham is tormented by bad dreams in which she decapitates her Falklands hero fiancé Oliver Hall at the altar. When she meets American punk Jenny Hoffman trying to resolve a childhood trauma experienced in the same house bought by newlyweds, all hell breaks loose.
Soon they must enter a mirror-reversed world where nightmares are made progressively more monstrous, gruesome and more chillingly real.