A mysterious alien spore cloud blankets Earth, triggering a global pandemic of "Corruption." Infected individuals gradually rot away, lose their minds, and eventually transform into monsters known as "Corpse." Human society collapses, and some humans awaken special abilities. These abilities are mostly related to body parts or functions, such as "Bone Blade," "Extreme Vision," and "Sonic Roar." Chen Li, a dental student before the cataclysm, possesses professional knowledge of dental structure. Often looked down upon for his dental abilities, he uses his expertise to discover and ultimately end the apocalypse.
