In the year 2535 of the Xia Kingdom, a man awakens from a hibernation pod after being frozen for five hundred years. By this time, nuclear radiation has caused humanity to regress completely, leaving people physically frail and helpless. Possessing the physique of an ancient human, he is revered as an ancestral figure from antiquity. His casual singing and dancing cause a global sensation, and nations compete to win him over. To uncover the truth behind humanity's regression, he ventures into forbidden zones that everyone fears and dispels the rumors demonizing the equipment there. He discovers a doomsday warehouse containing an antidote to radiation, encounters another survivor who was also frozen, resolves their conflict, and successfully mass-produces the medicine. He then distributes the antidote and leads humanity in restoring its physical strength. Casting aside his divine status, he joins everyone in reclaiming wastelands, cleaning up pollution, and embarking on a new beginning.