It's Mr. Hood's birthday and he's looking forward to a quiet celebration with his family. But Darla's friends show up with living presents, eat his dinner, argue about Tarzan and Alfalfa croons a special song for the unhappy man.
The Cabin Kids, in between song and dance numbers, are at the county fair with intentions, fair or foul, of helping Mammy win the Pancakes cooking contest.
The underage Rosemarie is still too young to run her inherited farm by herself; but she's more than aware that her foster father and the farm's administrator, the farmer Schlieker, is constantly skimming from the farm's finances to line his own pocket.
Three mice run, cavort, sing and dance around in the stores and restaurants a big city at night. They wind up in a café for an early-morning snack and stocking up on food provisions before they return to the safety of their den beneath a man-hole cover in the street.