After thousands of years in the floating world, Tiandu City quietly dissipated in the morning light, leaving only a ray of eternal light hanging in the void. Mingshuo, a young boy who lived in the city in the past, woke up at the end of light and shadow. He was carrying a fairy lantern that "illuminated everything", but he lost his memory of the past. Every step into the realm of annihilation, the remaining souls of the deceased whisper, telling the mystery of the destruction of the capital. Ming Shuo wants to find her old city and herself, but is shocked to realize that her own light is swallowing up all things, which is both salvation and disaster. The fragments of the fairy lantern are scattered across the world, and only by gathering them together can the capital of heaven be reappeared, but each piece hides forgotten sins and resentments. Is it to protect the eternal light, or to ignite the fire of destruction of new life? Mingshuo hesitates between truth and fate, and will eventually tear apart illusion and reshape the world with his own light. This article uses the disappearing city as a guide and light as a clue to explore fate and choice, illuminating the subtleties of the human heart and creating a unique perspective.