In a prehistoric world where gods and demons are everywhere and thousands of races stand together, the newly born human race is so weak that it becomes the blood food and slaves of all races, struggling on the edge of destruction. The protagonist Jiang Yuan, as a tomb keeper of the human tribe, is responsible for guarding the "Ten Thousand Bone Cave" where the ancestors of past generations and the remains of countless ferocious beasts, gods and demons are buried. He was not born with any magical powers, but he possessed a unique talent: extraordinary observation and deduction abilities. By observing the immortal Taoist textures on the remains in the Ten Thousand Bones Cave day and night, he understood the method of tempering the body from the bones of giant beasts, and deduced the method of refining Qi from the remains of gods and demons.
When the tribe faced the crisis of annihilation again, Jiang Yuan no longer remained silent. He used his own mortal body and his own methods to kill the powerful demon gods who were invading him, shocking the world in one battle. From then on, he embarked on the path of creating a cultivation system for the weak human race. He created the "Physical Tempering Chapter" to give humans the capital to fight against ferocious beasts; he established the "Qi Refining Chapter" to allow humans to embark on the path to transcendence; he developed the "Spiritual Soul Scroll" to allow humans to have immortal souls. Whenever the human race faces a desperate situation, he can always open up a new and stronger path for the tribe from among the myriad ways of heaven and earth. He led the human race from being hunted for rations to becoming an important chess player on the prehistoric chessboard step by step, and finally led the human race to the leading role in the world, and all races respected him as the "Tao Ancestor".