When maintenance mechanic Daniel wakes to an otherworldly glow, his ordinary life shatters—he's been summoned to Zenkon, a realm of monsters, magic, and existential threats. Alongside Rikuto, a Japanese man selected by the same divine spell, Daniel discovers he's cursed with an unprecedented disadvantage: complete magical immunity. In a world where magic flows through every living thing, Daniel alone stands defenseless against arcane forces—yet paradoxically shielded from their effects. While Rikuto leverages modern knowledge to stabilize the war-torn Kingdom of Mornistae, Daniel must weaponize his expertise in mechanics and manufacturing to survive. His ingenuity becomes his only asset against creatures and adversaries that wield devastating magic. But questions linger. Why did the gods summon two heroes—one brimming with power, the other stripped of it? What destiny awaits in a world built on the very magic Daniel cannot access? As global conflict engulfs Zenkon, these unlikely heroes must uncover the divine wisdom behind their selection before the kingdom falls to ruin.