Gu Chang'an, a menial disciple of the righteous sects, is assigned by the leader of the Righteous Alliance to infiltrate the Demonic Sect as an undercover agent, with the mission of bringing it down. To cripple the cultivation of its members, Gu Chang'an fabricates a cultivation technique that requires practitioners to destroy their own dantian and absorb miasma while standing upside down. Unexpectedly, this activates the feedback physique hidden within the Heavenly Demon Token. Rather than losing all their cultivation, the members of the Demonic Sect grow stronger and stronger by practicing Gu Chang'an's technique.