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.