The story of Hansel and Gretel illustrates the effectiveness of content marketing by showing how they shifted from traditional advertising methods to creating valuable content that addressed the needs of witches. By uncovering that witches required a special substance found in almonds, they generated engaging content which ultimately led to a significant reduction in child snatchings and improved community relations. Their successful approach not only solved their village's problem but also resulted in financial gain by establishing an e-commerce site targeting witches.