When young geologist Nalu arrives in the Rift Valley with her mentor Dr. Rami, she trades textbooks for seismographs and ground-penetrating radar to search for the planet's hidden heartbeat. From isolating primary and secondary seismic waves to measuring steaming fissures and mapping underground magma flows, Nalu's discoveries unlock the fiery history beneath her feet. Alongside local farmers and villagers, she installs early-warning sensors and designs raised crop beds that withstand shifting earth. Through playful experiments, comical misadventures, and ancestral campfire tales, Nalu learns that science and storytelling together can protect communities and reveal the pulse that binds us all to the restless core of our world.