Data restorer Xi Che's sister disappeared in the blank area. He bought surveillance footage at the edge of the blank area through the black market and found a fluorescent human fingerprint in the corner of the screen. In order to find the truth, he disguised himself as a geological researcher and entered the blank area, encountered the folding of space, and saw himself in different time and space many times. As the investigation deepened, he discovered that the missing people were all employees of "Weaving Web", and that fingerprint belonged to the first-generation AI engineer who should have died 20 years ago.
