Children's comedy about a grandpa who can magically shrink. Auntie Jules and Uncle CJ have gone away, so Miss Smiley starts making some changes.
Auntie Jules and Uncle CJ have gone away, so Miss Smiley is cooking breakfast for the Mill on the Marsh guests. She takes it on herself to make some changes in the kitchen, which she is convinced are changes for the better. Grandpa is not so sure. When Miss Smiley decides to do the same for Mr Whoops in the toyshop, Grandpa senses trouble and shrinks.
Miss Smiley and Elsie go to the toyshop and Miss Smiley starts rearranging all the sweets and toys. When Mr Whoops arrives he is not pleased about this at all. The couple start to fall out. Grandpa gets inside a jukebox and sings them a song about teamwork. Elsie joins in and soon Miss Smiley and Mr Whoops are dancing and singing along together.
Miss Smiley realises that she shouldn't have made changes without asking first and even changes the Mill kitchen back to how it was. Grandpa is very relieved.