The ancient demon, Dongfang Qingcang, who has been suppressed for a thousand years, comes back to the three worlds and starts a war between immortals and demons the moment he is reborn. In order to get out, the demon lord swaps souls with the immortal Lan Hua, who has difficulty controlling her magic power, and accidentally kills her immortal body. In desperation, the two embarked on a journey to find a new body. Along the way, the two experienced all sorts of things, fighting and joking, and Lan Hua started to develop feelings for Dongfang Qingcang, but little does she know that all this time, Dongfang Qingcang only used her as a tool to resurrect the ancient god of war Chi Di, and under the calm a larger conspiracy is also quietly carried out ……