Modern corporate slave Lin Yue transmigrated to the immortal cultivation world of Jiuhuang, reduced to a mortal, but bound to the Invincible Great Emperor System—activated only when locked with murderous intent by Great Emperor-level powerhouses, granting him absolute power to crush Great Emperors. Stumbling into the endangered Yaochi Holy Land, he bumped into the Empress Huang Zhao, who was being hunted down by two Great Emperors and severely wounded with her realm dropping. To survive in the perilous Jiuhuang, Lin Yue used the system's rules to disguise himself as an unfathomable worldly expert and stayed in the Holy Land. He must repeatedly shuttle between the brief invincible period when targeted by Great Emperors and the weak period of being a mortal, relying on acting and calculation to survive in the desperate situation surrounded by various emperors.