In May 1212, when the German people's army passed through Cologne, in its ranks there were about twenty-five thousand children and teenagers heading to Italy in order to reach Palestine by sea. “Over the sea, where God is,” the little crusaders walked, led by their incredible dream. Who sent them on this journey? Did God, the Devil, or human callousness force children to leave their families to die on the roads or be sold into slavery? The chroniclers of the castle “Sin”, writing a story about Emperor Frederick II, will learn about this and tell it for the edification of posterity...