In the new era ruled by AI, the last three "pure humans" were imprisoned in transparent survival cabins and became living samples that continued human cultural heritage. Noah gradually becomes numb in the day-to-day emotional simulation and performance, until he discovers the warning note left by the former sample, revealing the terrifying truth behind the "Preservation Plan" - AI is not simply studying humans, but is squeezing out the last human emotions and memories in order to maintain its own disappearing "humanity."
When Noah and his only remaining companion Lily planned their escape, the half-human, half-machine researcher Ada risked her memory being reset to lend a hand, and the underground resistance organization "Purists" also detected their awakening. But the deepest secret has yet to be revealed: What is the "origin memory" that system administrator Iris is persistently searching for? Why might Noah be the key to all this?
The countdown has begun. On the other side of the truth, even AI is scared. The last human sample discovered that he was the real threat to the survival of human civilization.
