The ancient demon Dongfang Qingcang has emerged after a millennium of oppression and sparked a war between immortals and demons in the three worlds. To break free from his confinement, he takes over the body of Lanhua, an immortal who struggles to harness her magic, ultimately leading to her demise. Together, the unlikely duo embarks on a quest to find a new vessel. Lanhua falls for Dongfang Qingcang during their battles and banter, unaware that he's only using her to revive the war deity, Chidi. As devious plans brew in the background, their scheme becomes even more elaborate and conducted in secrecy.