Young maintenance technician Lin Che arrives at the outpost lost in contact for twelve years with the Xunquangao, and hears the accident recording left by her mother Lin Lan. The station end transmission facility is damaged; rescue ships can enter but cannot return, and a stellar storm is about to arrive. Lin Che discovers that her mother has already set up a bypass, lacking only a key conversion part; the full-load verification errors of the old accident must also be faced. The rescue team dismantles the ship's spare components, verifies the response differences between old and new, trims the mounting base, settles 86 residents, and completes a four-minute joint calibration under the premise of maintaining independent life support. Mother and daughter use data to correct past judgments, first restoring protection, then conducting unmanned navigation verification, and the two boats and the rescue ship return home in an orderly manner.