Tells the story of the modern soul Shen Yi, who awakens on the way to exile in the Northern Wilderness, only to discover he has taken over the body of a border criminal official's son. Beast attacks, soldier massacres, corpse piles on desolate roads, and broken iron chains form a dead-end beginning. Shen Yi possesses neither the original owner's complete memories nor a stable identity, and can only rely first on military colony information, terrain judgment, and organizational ability to forge temporary cooperation with survivors such as the Iron Cavalry.