Jiang Xiaoyu, an ordinary young man with severe myopia of -15.00 diopters, heads to the countryside to stay with his cousin. But when his glasses are stepped on and shattered, turning the world into a blur of "pixelated mosaics", he accidentally stumbles into the Underworld Vocational and Technical Academy—a terrifying place dreaded by all mankind. Under the distorted filter of his extreme nearsightedness, horrifying supernatural survival rules turn into a hilarious campus comedy. The bloodthirsty homeroom teacher seems to him like a cool, aloof female instructor, while an S-rank vengeful spirit who slaughters without mercy and is engulfed in malice is mistaken for his frail, "anemic, and malnourished" sweet cousin.