Adalbert would like to go to the sorcerer's ball, but has no suitable dance partner. He asks Miss Moon to accompany him, but she has two left feet. Then he accidentally discovers the dance talent in the garden of the neighbor of the McGuffles: the Baroness! Adalbert is enraptured by the fleet-footed lady and absolutely wants to invite her to the ball. Miss Moon and the kids are trying hard to prevent that because the baroness hates everything that has to do with magic.

In the attic Paul finds his old game suitcase. He enthusiastically inspects him with his children and wishes to be a child again. For Miss Moon, nothing is easier than that. She just turns her employer into a boy for a few hours. The only problem is that Lady Pop has announced itself at short notice and will come home at any moment. In addition, Mr. Knipserich is again in front of the house on the watch and shoots proofs of Paul's transformation into a boy. Miss Moon and the children have to get to the photos as soon as possible.