In a dystopian world where kingdoms are divided based on Keirsey's Temperaments, a deadly and mysterious plague sweeps across the land, infecting individuals according to their temperament. The disease mutates, manifesting in horrifying ways, transforming the infected Artisans into monstrous beings, the Idealists into delusional creatures, the Rationals into cold and calculating killers, and the Guardians into fanatical enforcers of order. Amidst the chaos, a resilient survivor named Ethan emerges, immune to the plague due to his unique temperament composition. Struggling to navigate the treacherous landscape of fear and despair, he forms an unlikely alliance with survivors from each kingdom, each possessing their own distinctive skills and attributes. Together, they embark on a perilous journey to find a rumored cure hidden within a long-abandoned research facility. Along the way, they encounter grotesque mutations, nightmarish landscapes, and the remnants of society collapsing under the weight of the epidemic.