When charismatic volcanologist Dr. Mira invites curious twins Rian and Tova to Mount Emberfall's base camp, they become the Volcanic Core Adventurers. Equipped with heat-resistant suits and rock-hammer tools, they explore smooth pahoehoe braids and jagged 'a'ā clinkers, analyze minerals with a spectrometer, and measure sulfur dioxide emissions to decode volcanic moods. From steaming fumaroles to acidic hot springs, the Adventurers propose eco-friendly solutions to neutralize soil, study lava bombs at the crater rim, and build 3D magma models. Their final volcano fair empowers villagers with safety plans. Through fiery exploration, young readers discover geology, geochemistry, and the spirit of scientific teamwork.