In a war-torn world called Gehenna, three powerful deities—Gaelix, Morta, and Lunara—observe the chaos brought by demons who have granted mortals power without hard work. As the world spirals into darkness, Gaelix and Morta prepare to abandon it, deeming it beyond saving. However, Lunara still believes there is still a chance for redemption. Despite the overwhelming odds, Lunara proposes an unorthodox plan: to summon a mortal from another world to become a beacon of hope for Gehenna. This mortal, Rex, is not a warrior or a mage, but a kind-hearted human whom Lunara has watched over for years. She believes his unwavering compassion, even in the face of adversity, makes him the ideal candidate to restore light to the hearts of Gehenna's inhabitants. Reluctantly, Gaelix and Morta agree to help Lunara, though they warn her of the great personal cost. Together, they channel their powers to summon Rex, who arrives bewildered and disoriented in this new world. Despite his confusion, Rex agrees to take on the monumental task, driven by his innate desire to help others. As Rex steps into the world of Gehenna, the realm's fate hangs in the balance. With the gods' support and his inner strength, Rex embarks on a journey to reignite the forgotten light within humanity, challenging the demon's dominance and reigniting the last hope for a world on the brink of ruin.