In the third millennium when the "Great Silence" came, humanity's last interstellar city-state "New Dome" relied on the deciphered ancient alien relics "Star Skeleton Core" to maintain its existence, but they did not know that deep in the core was sealed a "void code" that could swallow galaxies. Lin Ye, a young relic decoder, triggered a core abnormality in an accident, awakening the "Echo" of sleeping alien consciousness, and uncovered the shocking secrets of the origin of human civilization and the interstellar death cycle. As the void code spreads, ruins across the galaxy are losing control one after another. Ancient interstellar hunters, endangered alien allies, and human rebel forces coveting the core follow one after another. Lin Ye must establish a symbiosis with "Echo". In the process of cracking the code of the star skeleton, he struggles between the survival of civilization and the bottom line of ethics, and finally reveals the ultimate purpose of the core of the star skeleton - is it to guide the civilization to jump, or to write the final footnote for the dying universe?