Seven hours before the doomsday outbreak, food delivery rider Jiang Bei, who survived eight years in the apocalypse, is reborn. Using his memories from his past life, he stockpiles food and medicine, welds and modifies vehicles, and warns his neighbors, but no one is willing to believe him. Only female doctor Wen Nian keeps his note. When the virus breaks out, Jiang Bei leads forty people to fall back and defend the boiler room, sets rules to resist looting, and step by step builds the Three-Thousand-Person Rock Fortress. He Tianxiong, who profits from the national disaster, suffers successive defeats through five clashes; Bai Shouren, who concealed the epidemic early warning, makes a confession before the ranks and charges the bridge to redeem his sins. As a horde of ten thousand corpses presses on the border with the corpse king wearing an old military tag on its chest, Jiang Bei uses purified evolutionary fluid to poison the king, ending the corpse king with a single dose. One year later on Qingming Festival, he hangs up his battle blade and welcomes a new era that does not rely on blades.