After three hundred years in cryosleep in the rusted wasteland tunnels, Lin Ye awakens with the Gaia terminal his mother left behind. To restart Earth's dormant ecosystem, he raids mechanical rat nests for fragments of the Star Core and outmaneuvers rebel AIs and remnants of the council. He must also contend with the System's contingency plan to “eliminate humanity.” With a 72-hour countdown ticking away, he risks everything under the guise of an intern maintenance technician, gambling on a chance for humanity and Gaia to coexist. Every step is a deadly contest between rusted iron and starlight.