Thirty years after the Final Catastrophe, the earth was enveloped by radiation and Ember Scar disease, and humans were trapped in the Ark base and surface ruins. Chief physician Lu Hanxing uses rationality as a blade and weighs life with a resource allocation formula, but he is always bitten by the guilt of abandoning his family thirty years ago. Lin Jin, a doctor in the wilderness, brought a homemade resonance device to treat patients abandoned by the Ark in the ruins of the ruins. The image of his mentor's broken crystals and death became the source of his obsession.
When the Ark's protective cover was damaged and Ember Scar disease broke out on a large scale, and the "Fire Project" was about to abandon 90% of humanity, biological expert Su Nuan discovered that Ember Mark was not a terminal disease, but an invitation for symbiosis from the earth. Lu Hanxing put aside his calculations, Lin Jin restrained his loneliness, and the two went from tit-for-tat to fighting side by side. They took the survivors whose skin was covered with crystal patterns and built a symbiotic area on the ruins, turning the marks that once symbolized death into medals for reconciliation between humans and the earth and the rebirth of civilization.
