The film opens in Edwardian times in Hocombe Woods, where Doris Mann (Angela Douglas) and Albert Potter (Jim Dale) are courting. When Albert searches the woods for a Peeping Tom, Doris is abducted by a monster named Oddbod (Tom Clegg (actor)), which leaves a finger behind. Albert, finding the finger, rushes to the police station and reports the matter to Detective Constable Slobotham (Peter Butterworth), who in turn tells his superior, the henpecked Detective Sergeant Sidney Bung (Harry H. Corbett), who has been investigating similar disappearances in the same woods.