In a world where everyone undergoes class awakening, Lin Han unlocks the world’s sole hidden class: Shinigami. Possessing the power to reap lost souls and command an unstoppable undead army, he also binds the Almighty Fusion System, allowing him to combine abilities and items infinitely. To uncover the mysterious disappearance of his father and revive the fallen Caesar Guild, Lin Han dives into deadly dungeons and secret realms, outsmarting formidable foes. Rising through perilous trials, he paves his way toward becoming an apex power.