Night shift security guard Lin Feng received a copy of the "Night Patrol Supplementary Rules" with the ink still wet on his first late night at the Jingyuan Folk Museum: "Check the paper mannequin exhibition area every hour to ensure that the eyes of all paper manikins do not face the exit." "If you hear the sound of wooden fish in the east hall, the door to the bronze exhibition hall must be closed within 3 minutes." "It is forbidden to touch the puppet 'Ayao' wrapped with a red string between 2 a. M. And 4 a. M." At first, he thought it was a prank by an old employee, until he discovered that the paper man's eyes would turn on their own in blind corners of the surveillance system, the puppets wrapped with red strings would leave "walking" afterimages in late-night surveillance, and even colleagues would disappear mysteriously due to violation of the rules. In order to find out the truth, Lin Feng teamed up with Su Qingyuan, a researcher in the museum who has studied folk magic. While avoiding the surveillance of the mysterious cleaning staff and deciphering the folk taboos behind the rules, they gradually uncovered the terrifying conspiracy of curator Zhou Mingyuan to use the museum exhibits - from Xiangxi paper figures to Ming Dynasty puppets - to practice the "soul gathering technique". What they didn't know was that they had already become the "key sacrifice" in this evil ritual.
