The down-and-out witch picked up a human baby when she fled to a dilapidated stone temple. She took her in out of compassion and brought her back to the devil's land. More than ten years later, the baby was ordered to leave the devil's land and go to the world of human cultivation. As he grew up, he began to doubt his identity and unravel the origin of the devil. Everything started with a legend and ended with a sword.