In 2073, red fog swept across the city, civilization collapsed, and bloodthirsty rotten beasts ran rampant. Jiang Yan, a doctor of ancient history, was trapped underground in the museum, becoming the most "out of place" survivor in the apocalypse - without strong combat power, no supernatural blessings, only historical materials and archaeological experience from the Qin, Han, Wei, and Jin Dynasties. From using an archaeological hammer to hit stone walls to avoid rotten beasts, to building defensive fortresses based on ancient historical records; from mediating civil strife in settlements, to using "fire attack armor breaking" to repel high-level rotten beasts, she uses history as a blade to carve a way out of the wasteland. A jade pendant from the Qin and Han dynasties engraved with Chi You's pattern unexpectedly revealed the connection between red fog and unknown disasters in ancient times. When the words in the study turned into codes for survival in the apocalypse, Jiang Yan and her partners went deep into dangerous areas to explore the truth, but were blocked by a team of mysterious survivors. In this desperate situation where civilization is at stake, her chronicle is not only a record of survival, but also the ultimate collision of ancient historical wisdom and apocalyptic crisis.