To save his adopted daughter, Chen Nian, young Chen Chunsheng awakens a lifespan-burning system in a desperate situation. By burning his lifespan, he cultivates a Heavenly Spiritual Root, but suddenly transforms into an old man. He also becomes bound to the Primordial Myriad Phenomena Origin-Returning Cauldron left behind by his ex-wife, Su Qingyue. Taking the assumed name Chen Xuan, he joins a cultivation sect as a menial disciple. Using the divine cauldron to refine discarded medicinal dregs, he extends his life and regains his middle-aged appearance after reaching Foundation Establishment. After killing the enemies who framed him, he is hunted by a powerful Golden Core cultivator and escapes into an ancient secret realm. There, he burns his lifespan to save Su Qingyue and awakens the Supreme Bone. He exposes a conspiracy between the sect and the demonic cult, which uses a Spirit-Devouring Formation to slaughter its disciples. After cultivating a Nine-Pattern Golden Core, he personally kills his enemies. Finally, with two Supreme Bones, he breaks through to the Nascent Soul realm, kills the demon-corrupted sect master, rescues his daughter, reconciles with Su Qingyue, and takes control of the sect.