When the Earthlings who collectively traveled across the globe completely cut off their return, they no longer insisted on "returning to their hometown", but completed the identity transformation from "visitors in a foreign land" to "civilized masters" in a different world, exploring the struggle of human nature, the inheritance and rebirth of civilization in a desperate situation, and the ultimate proposition of "what is hometown?" Core Anchor: The return journey is 100% irreversible, with no possibility of turning back. All plots revolve around the established fate of "no return".
