Welcome to Rocky Top, Tennessee, home-sweet-home to Cyrus Stacy...that is, until he sets out to uncover the light that his cruel father told him that he would never find. Mysterious voices call to Cyrus and lure him deep inside the Tennessee Underground. Here he inherits a power that he could never dream of possessing above ground in his snot bubble of a town. Unfortunately for those creatures who call Tennessee's subterranean lands home, Cyrus is about to unleash his fury of complete domination. His destiny reveals his new name-Lord Bonecarver-and he lives up to his gruesome title. Meanwhile, just days after saving the Virginia Underground from the grip of the ruthless Parix, our heroes, Jake and Krindle, embark into the unknown, underground lands of the Tennessee to help save it from this new evil. Here they hope to live up to their heroic reputations in a miraculous land filled with creatures both endearing and malicious. What they must face in their quest to bring peace to the underground will become an epic battle for life and death...