In the depths beneath the Earth's surface exists the Inner World, a realm embroiled in conflict between sentient spiders and the invasive insectoid species known as Insectors. Human allies, referred to as Spider Riders and originally from the Outer World or Earthens, support the spiders in this struggle. These riders are selected by the Oracle, a powerful entity.
Hunter Steele, a young boy driven by legends of a hidden pyramid and insights from his late grandfather's journal, embarks on a quest to uncover these mysteries. Guided by fate, he encounters the Oracle and is subsequently sent to the Inner World as a Spider Rider.
Initially disoriented in a dense forest, Hunter is approached by Shadow, a colossal spider. After some hesitation, Shadow decides to ally with Hunter. Soon after, Hunter crosses paths with Corona, a talented Spider Hunter and compassionate young woman who dreams of a simpler life. She instructs Hunter on the responsibilities of a Spider Rider and highlights the dire consequences should the Insectors maintain their dominance over the Inner World.
Hunter Steele, an impulsive youth, commits himself to safeguarding the Inner World. His mission to collect the four Oracle Keys, which unlock the Oracle's ultimate power, propels him toward a decisive showdown with Mantid, the formidable leader of the Insectors.