Synopsis by Hal Erickson
The "Colossal Carnival" comes to town, and Betty Boop is all set to take little Junior to the big show. Alas, a thunderstorm forces the pair back indoors, whereupon Junior bursts into tears. Fortunately, Betty's resourceful neighbor Professor Grampy puts on his thinking cap and figures out a way to stage an elaborate indoor carnival. Using such household items as a washing machine, a seltzer, bottle, a fan and a kitchen table, Grampy comes up with all sorts of swell rides and sideshow attractions. But the best is reserved for last, as Grampy concocts a way to convert a high-rise apartment into a roller coaster (with the help of Max Fleischer's patented "stereoscopic" process). Song: "We'll Have a Bushel of Fun".