Life is fleeting, chaotic, and full of misery. For Han Shuo, a cowardly young man harboring wicked thoughts, death was just the beginning. After a twist of fate, he is reincarnated into the body of Bryan, a bullied errand boy in the Necromancy department of the Babylon Royal Academy of Magic and Force. Armed with the inherited memories of a demonic cultivator named Chu Cangming, Han Shuo finds himself in a brutal, medieval-like fantasy world where strength is the ultimate truth. To survive and gain power, he secretly practices both ancient demonic arts and forbidden Necromancy. By fusing these two sinister paths from different worlds, he overcomes his cowardly nature, refines undead creatures, and crafts powerful magical treasures. Step by step, Han Shuo rises from the very bottom of society to become the legendary Great Demon King, carving a path of blood, power, and dark glory.