Traveling through the Northern Song Dynasty, Lin Yan woke up in a Chaobu room where salt water poured in. An AI that cannot connect to the Internet and cannot predict the future coexists with him, and the false accounts and dissent fragments left by the original body point to a sea city that is about to be abandoned. He has no official position or dispatching power, so he can only use evidence, testimony and realistic choices to lead people to guard the city's final core of recovery.
