

In 2287, humanity is extinct, and Earth belongs to vampires and werewolves locked in a century-old war. When vampire archivist Veyra discovers a preserved human skeleton and a forbidden biology textbook, she begins questioning everything her kind believes about the past. Meanwhile, werewolf scout leader Elon learns that his sacred symbols are actually relics of human civilization. Their investigations lead them to the Dead Zone, where they uncover a terrifying truth: humanity vanished in a single, unexplained moment. Hunted as heretics, Veyra and Elon must join forces with a mysterious AI to uncover the truth behind humanity's extinction before history repeats itself.

As the Monster Age arrived and special abilities awakened, what awaited humanity was the end of the world. At the brink of the apocalypse, Frank Channing was sent back in time to the second year of the Monster Age. There, he awakened the Infinite Devouring System, allowing him to gain growth points by hunting the monsters. Along with it came a mysterious serpent-shaped mark on his arm. It could transform him into a powerful serpentine creature capable of wielding the very forces of the monster—seemingly tied to the secrets of the Blood Moon. From the system, Frank learned that he carried the mission of saving the world.