In 2037, when a gamma-ray burst tore the Earth apart, Yan Xia, as the only survivor, fled on a starship with AI Ella. From the ruins of the solar system to the unknown galaxy of Proxima Centauri, from rebuilding equipment with 3D printers to harnessing dark matter energy, from facing the enslavement of "light-chasing civilizations" to fighting against advanced civilizations that master graviton technology - this interstellar wandering spanning thousands of years is not only a struggle for survival, but also the stubborn continuation of the fire of human civilization in the universe. When the engines of the starships cut through the darkness, they carry not only materials and technology, but also the eternal obsession of mankind with "home".