Memory, Abyss of Stars

In 2237 AD, humans had already broken through the boundaries of the solar system and established a colonial network covering 38 star systems. However, in a cosmic event called the "Black Domain Echo", all quantum communications suffered irreversible delays and interference at the same time, and the entire human civilization instantly collapsed from a highly interconnected network into an isolated galaxy. In the next 47 years, wars, plagues, and resource depletion broke out one after another. Most colonies fell into silence, and some planets even disappeared from the star map. However, the Abyss, an "interstellar surveying ship" that was recently lost in the black domain, suddenly sent out a distress signal at the edge of the empty Orion Arm. The signal contained not only a request for help, but also a time coordinate from ten thousand years in the future.