In the apocalypse when the "First Energy Agreement" collapsed, survivor Nan fought to protect her last home, the "Seventh Reserve." When she sneaked into an abandoned energy station, a mysterious being calling herself "Etta" invaded her consciousness. He evaluates her every action with absolute rationality, questioning her "irrational" choices of sacrificing efficiency to protect others. Forced to accept Eta's guidance, Nan gradually discovers that the world is far more complex than she knew. Strange changes occurred in the Seventh Reservation, and the residents entered some kind of transcendental state under the influence of the "grey domain". What's even more shocking is that Etta's true identity is actually the fragment of consciousness of her long-dead father, Dr. Lin. Nan learns that he is not a real human being, but one of thousands of digital consciousnesses in his father's "Mirror Project." The entire apocalypse is an experimental field for cultivating new human consciousness. When she chooses to face the truth instead of escaping, she awakens a unique ability - to hear "distant cries" and feel the pain of all life. This ability is both a blessing and a curse. With Nan's awakening. She is no longer a passive experimental subject, but an active "watchman." And on the distant horizon, the steel torrent of the Reconstruction Committee, the unknown threats in the gray domain, and more "seeds" waiting to be awakened, all indicate that a greater storm is coming. This is a story about finding a way out between absolute rationality and fragile humanity, and explores how a person can live without burdening himself when he can feel the pain in the world.
