When brothers Marc and Luis once again argue over their building blocks while playing, their grandmother tells the story of little Friedrich, who would later invent these very building blocks. This picture book narrative is dedicated to the story of Friedrich Fröbel from Oberweissbach, who was never really allowed to be a child. He was not permitted to make noise or cause a ruckus, nor to romp around outside with the other children. As Friedrich grew older, he studied natural sciences in Jena and traveled through the country. Many years later, he returned to his Thuringian homeland and founded the first play institutions for children in Keilhau and Bad Blankenburg. Here, children were allowed to play, romp in nature, and do everything that Friedrich had so longed for as a child.