To prevent vacuum decay, an entire civilization ascended to a higher plane, leaving behind a silent Solar System and a hundred thousand Star Gates. Awakening ten thousand years later, Fang Ming becomes the last "spark," with only the AI Xinghuan by his side. Together, they restart Xinghuan's dormant industry, activate the sealed Star Gates, and embark on a journey to search for traces of humanity. Meanwhile, the universe of allied races once protected by humanity is splitting into those who watch and wait, those who seek, and those who doubt. Beneath a starry sky without the Ascendants, the journey home is also a journey into the unknown.