Lighthearted family comedy. Hubert, the faithful canine companion to the late Duke of Dingwall (John Neville), inherits the Duke's estate, the magnificent jewels and the official title of Duke. To assure Hubert's well-being, Charlotte (Courtnee Draper), the butler's niece and Hubert's best friend, is made his legal guardian. An unlikely duo, Hubert and Charlotte turn the world of high society upside down. But as the two try to fit in they meet Cecil (Oliver Muirhead), the Duke's conniving nephew. Believing the pair to be a royal pain, Cecil and his scheming girlfriend make every attempt to steal the inheritance; including trying to 'marry' into the 'Dukedom' via their pet poodle.