When Fry's Circus of Wonders pitches its tent opposite Betsy's house, Betsy feels a strange sense of longing. But Grandad can't even bear to look at it, it stirs up too many painful memories of Grandma's days as a circus performer. As her parents rally round Grandad, Betsy slips away to see the show. But Betsy isn't the only one enjoying the spectacle - her forty-four mice have escaped and seem intent on joining in! As the mice gatecrash the magic act, disaster strikes and Betsy finds herself facing up to the odious ringmaster with a lot of explaining to do...
