In the not-too-distant future, the earth is facing the crisis of "great depletion", with surface resources almost exhausted and human civilization in trouble. The genius inventor Fu Le inherited his father's unfinished business and developed the revolutionary earth drilling equipment "Geocenter Wanderer", determined to prove that his father's theory about the rich resources underground was correct.
During a desperate drilling operation, Fu Le successfully reached a depth of nearly ten kilometers underground, but unexpectedly discovered a vast and vibrant underground world - the "Nether Light Realm". Not only are there luminous fungus forests, crystal mountains and strange creatures, but they are also home to the highly intelligent wing-human race "Wing Whisperers" and dangerous underground behemoths "Armor Beasts".
Fu Le soon discovered that this underground world not only contains rich resources needed to save the surface, but also hides amazing secrets about his family. His father Fu Yunfeng did not die in an accident as it appeared, but disappeared mysteriously after discovering this underground world. What is even more shocking is that Fu Le also has a brother Fu Huan whom he has never known, and the "Earth Center Project" founded by his father is actually directly related to the depletion of global resources.
As the exploration deepens, Fu Le finds himself involved in a conflict concerning the fate of two worlds. He must form an alliance with the Wing Whisperers to fight against powerful enemies who seek to control underground forces, uncover the secrets left behind by the ancient civilization "Geocentric Tribe", and prevent the awakening of the ancient threat "The Devourer of the Void" sleeping deep in the earth's core.
