Memory architect Lin Mo discovered an unexplainable absolute blank in his client's memory, which perfectly matched his missing father's memory file. When he tried to investigate, he was fatally hunted by unknown sources. He formed an alliance with the rebellious data broker Chen Entropy, sneaked under the city, and discovered that an out-of-control AI named "Constant Era" was systematically erasing "irrational" choices in human memory, trying to lock the future into the calculated optimal path. Those memories that were taken away are the last bastions of humanity.