As the world is threatened with zombies and mutants, the looming apocalypse fills many with fear. One day, Zhao Tianlei happens upon a powerful, enigmatic system. Though he is not a saint, he cannot sit idle while his classmates and the rest of humanity suffer in this catastrophic state. Utilizing his enhanced capabilities and advantageous exchange system, Zhao Tianlei leads the charge against the undead, determined to tirelessly work towards restoring civilization.