Su Mubai is betrayed and murdered by his lover and close friend. He is reborn in a multiverse game where everyone is transported into another world, awakening the unique forbidden talent Calamity and changing to the hidden class Death Dominator. With only 1 HP, he survives the chaotic world by sharing life force with his undead legion. Using his Calamity talent, he endlessly upgrades equipment, skills, and monsters, summons an army of disaster skeletons, and tames the mythical mount Frost. While exacting revenge on his enemies, he meets the immensely wealthy player with the God of Wealth talent and forms a mercenary group. As players from nations across Blue Star compete against one another, he wields the Death Codex, gathers soul power, travels abroad to complete his class advancement, and unleashes an undead storm across the myriad worlds.