After the ancient war between immortals and demons, the Canglan Realm became a broken domain where cultivators were trapped at the Deity Transformation stage for life, unable to ascend. Zhao Rufeng, the Great Qin Emperor, plotted to sacrifice every living being in the realm and ascend to immortality through a blood sacrifice.
Li Fusheng, a young man from Earth, accidentally triggered an iron rod at the bottom of a river while saving Su Qing'er from drowning. The two transmigrated separately: one landed in Taiping Town, the other in the imperial capital of Great Qin. Secretly protected by the realm's guardian, Li Fusheng followed Yun He onto the path of immortality. The iron rod could devour the spiritual essence of weapons, helping him dominate wherever he went.
He befriended Li Taibai, encountered several women who fell for him, braved secret realms, and battled prodigies. The righteous factions nicknamed him Li the Great Menace. A group of guardians who lived in disguise among ordinary people secretly lent him their aid. When Zhao Rufeng opened the altar to destroy the realm, Li Fusheng and Su Qing'er joined forces, wielding the iron rod to turn the tide, shatter the domain's shackles, and usher in a new era for Canglan.
