When Tutter gets a letter from his Grandma Flutter annoouncing she's coming for a visit, he couldn't be happpier - until he realizes she's arriving that very day. What's he to do? The house is a mess, and his grandmother likes things clean, clean, clean! With the help of his good friends in the Big Blue House, he manages to whip things into shape-only to end-up a dirty mess himself. But as Tutter soon discovers, the best thing about families is that they love one another no matter what.