In 2048, Lingyun System was tested in the city of Shenquan as the first example of "popular application of intelligent brain". An accident at the Lingyun System press conference that day triggered ideological and emotional entanglements between its founders Zhou Tong, Zhao Feibai, and their childhood friends Ayiguli and Aizimaiti. In order to achieve his goal, Zhou Tong sealed the "brain consciousness" of Zhao Feibai, Ayiguli and Aizimaiti in the sandbox space within the Lingyun System, but accidentally triggered the activation of the system's "initial intelligent AI" - Lu Keke. Everything is related to the "imprint" game in the memories of the four people back then. An intelligent crisis with the code of "human bond" unfolds between the real and virtual worlds.