Beneath the Earth's surface lies a realm known as the Inner World, where a war rages on between intelligent spiders and humanoid insects called Insectors. However, the spiders have "Spider Riders"—humans from the Outer World, or Earthens, chosen by the Oracle to fight alongside them. Hunter Steele, a young boy with a desire for exploration, embarks on a journey with his grandfather's journal, which contains tales of a mysterious pyramid. During his quest, he meets Corona, a skilled Spider Hunter, and Shadow, a giant spider who reluctantly agrees to fight by his side. Corona teaches Hunter about the fate of the Inner World if the Insectors continue their reign. Hunter's task is to retrieve the four Oracle Keys, which hold the Oracle's true power, leading to a final battle against Mantid, the Insectors' leader. This is the story of Hunter Steele, a young boy determined to save the Inner World regardless of the difficult challenge he faces.