At the end of the world, the "blight disease" swept across the world, crops withered, and civilization collapsed. The moment Chen Sui'an was attacked and killed by refugees, he was reborn and returned to one hundred days before the disaster broke out. Carrying the mysterious old seed left behind by his grandfather, he gave up struggling in the city, took root in his old house in the country, and started a life-hoarding plan in a race against time. Renting wasteland, harvesting old seeds, building warehouses, diverting mountain springs, plowing deeply and carefully using old methods, and building a strong defense line with stupid skills. From preparing for war alone to gathering his neighbors, he united carpenters, agricultural technicians, and teenagers to cultivate hope in barren land and fight against the erosion of blight and the plunder of refugees. When the brutal "Skinner" gang approaches, and when strange old seeds bloom with vitality, Chen Sui'an must not only protect a shelter, but also use the seeds as a salary to ignite the spark of human existence in the wasteland.