Oswald and his niece go to bed and dream of going to Slumberland, where there are free rocks to throw through an infinite number of windows. However, the younger rabbit wanders into Nightmare Land, where it's all scrubbing and brushing your hair and school all the time.
Well, it's far more frightening and much less creepy than the infinite number of Tom Hanks clones in THE POLAR EXPRESS, and the joy the other youngsters take in sheer destruction makes me believe that some one on Walter Lantz' staff actually remembered being a child (or had seen one), and knew what they liked to do. Too often these 'kid-friendly movies were puerile in their cuteness.
While some of the characters are carefully designed and drawn (the Humpty Dumpty character, for example, who appeared in a couple of other Lantz cartoons), others were poorly designed and simply drawn (the hairbrushes). Still, for the sort of singing cuteness effort, it's pretty good.