Immortal cultivator Xuan Jin discovers that the "spiritual energy" he relies on for cultivation is actually corrosive gas (oxygen) that rots bones and invades souls. Tao's heart is about to collapse, his flesh and blood are deformed, and the ancient god whispers in his ears: Should we resist oxidation and die, or should we embrace alienation and assimilation? In this twisted "tribulation", can he maintain his "human" form?
