Granny Little is sad but no one knows why. To cheer her up, the Littles decide to throw her a surprise party! They'll have to find a way to get all her friends to the party. But with the help of Cousin Dinky and his glider, they just might be able to get everyone there in time for the big surprise. With any luck, the party will be just what Granny needs to put a smile back on her face.