Zheng Xuan transmigrates into a vast world of immortal cultivation. When he awakens, he discovers that he has taken over the body of an outer-sect disciple of the Xuantian Sect who shares his name. The original owner had outstanding talent and was noticed by an inner-sect elder, but he was sabotaged during a succession struggle. His spiritual root was destroyed and his dantian shattered, leaving him a lowly menial servant at the bottom of the sect, liable to be killed at any moment. Just as he is driven into a desperate corner, the Eternal Cauldron Suppression System activates. Completing its missions grants him a hundredfold reward: kill invading outsiders and receive a hundredfold return in cultivation; refine a naturally formed spiritual treasure and automatically deduce a supreme cultivation art; withstand the pressure of the Heavenly Dao's tribulation lightning and unlock the Eternal Cauldron's indestructible body.
While cultivators at his level toil for ten years just to barely break through, Zheng Xuan can gain vast amounts of cultivation simply by letting the System run in the background, making a rapid comeback and face-slapping his rivals. When Jiang Qinghong, the sect elder who once plotted against him, sees him rise again, he joins forces with neighboring sects to launch an all-out siege, hoping to snuff him out before he can grow. But Zheng Xuan uses the System's rewards to turn the tables on them one by one, face-slapping every established powerhouse who looked down on him.
As his strength grows, Zheng Xuan gradually uncovers the truth behind the plot against the original owner: it is tied to a vast conspiracy involving an invasion by races from beyond the domain. The myriad races of the heavens are all eyeing the land of Zhongzhou. Ancient emperors of various races, divine-clan saints, and demonic-clan supremes take turns seeking him out to provoke him, hoping to eliminate this rapidly rising variable. With the Eternal Cauldron in hand, Zheng Xuan sweeps all before him, takes in talented disciples, marries an unparalleled Dao companion, explores secret realms throughout the world, puts down internal strife, and leads an expedition beyond the domain. Step by step, he grows from an outcast of his sect into the ruler of the myriad heavens. In the end, with the power of a single cauldron, he crushes the calamity from beyond the domain and reigns supreme over the myriad races for all eternity.
