The Clubhousers are spending the day at the beach, when Pegleg Pete sails to shore with a note from Goofy's long lost Grandpappy, Captain Goof-Beard.
Ahoy, Matey. In the special, Mickey and pals are enjoying a day at the beach, when Peg Leg Pete delivers a note from Goofy's long-lost Grandpappy, Captain Goof-Beard (voice of Dick Van Dyke), asking for the gang's help in ensuring that Harmony-Chord Island, the musical isle where Goof-Beard lives, doesn't go completely out of tune and sink.—Disney