When Zadie discovers a hidden stone circle in her backyard, she meets Dr. Bram, a kindly soil scientist with sky-blue spectacles. A hint of magic shrinks her to the size of an ant, launching her on an underground quest through soil layers. She rides earthworms, explores fungal superhighways, and tracks moisture on its journey from rainclouds to aquifers. When an engine oil spill threatens the subterranean world, Zadie engineers a bioremediation experiment using sunflowers and compost microbes to heal the earth. Back at full size, she compiles her findings into a pop-up field guide—and inspires her community to protect the living classroom beneath their feet.
