Dimensional rifts tear open the fabric of reality, unleashing hordes of otherworldly monsters that devour civilization and thrust humanity into an age of survival. Forced to embrace a system of professions, nations race to develop formidable cultivators and claim dominance over the alternate world hierarchy. From millennia of unsupervised auto-battling, the world's first legendary warrior awakens—carrying incalculable buffs accumulated through an eternity of AFK grinding. The otherworld's mightiest bosses quake at his emergence. Even global T0-tier elites surrender, pledging their strength to his cause.