Sir Hector Benbow invites Cherry, a pretty shop assistant, to dine. Arriving home, he finds not only Cherry but Mrs Frush, to whom he has rented Thark, his niece`s Norfolk house. Mrs Frush complains Thark is haunted. To distract Lady Benbow`s attention from Cherry, he suggests everyone go to Thark, which lives up to its spine-chilling reputation. A wild night, sinister butler and plethora of romantic mix-ups add to the lively proceedings.