Freelance graphic designer Lin Xia's life was completely torn apart by an anonymous express box. Inside was an old-fashioned flip phone, and the mysterious phone call that followed left only a creepy greeting: "Welcome back, No. 37," And asked her to look out the window - a black shadow was silently watching her.
Immediately afterwards, an uninvited guest claiming to be an FBI agent came to her door and told her an appalling truth: the entire life she remembered working in Chicago from 2015 to 2016 was pure fiction. She is actually one of the victims of an illegal memory experiment project called "Lighthouse", code-named "No. 37". She is not a unique case, but she is currently being hunted and silenced. An accidental discovery made her realize that these "protectors" were also pretenders. At the critical moment of life and death, she was rescued by a mysterious woman who called herself "Iris" (No. 29), Who was also a "work" of the lighthouse.
Forced to flee, Lin Xia struggled between sudden bloody pursuits and violent memory flashbacks. An "unknown" number that could never be displayed became her only guide through that old-fashioned mobile phone, and the first clue she gave shook the foundation of her world: her beloved parents may also be a carefully arranged scam.
During the verification process, she discovered that her life had completely gone off track since graduating from college, and all the warm details could not withstand scrutiny, like a carefully woven giant web. She got to know more survivors who had the same experience as her - the extraordinary "Hound" (No. 8) And the genius hacker "Intelligence".
