Zephyr is the last human fighting evil in a world abandoned by the gods. After being slain by Tartarus, the Demon Lord, all of humanity seems lost. However, much to the sinister amusement of the gods, Zephyr is reincarnated to save humanity and avenge those he loves. Can Zephyr finally have his revenge against Tartarus and save the woman he loves, or is he doomed to repeat the past?