Li Mu, who was released after serving his sentence, faced expulsion and huge compensation for assaulting his colleagues. His former boss Lao Wang "kindly" recommended him to work as a sleep tester in a haunted house. Li Mu received a notice from his colleague Chen Xue and went to the haunted house at No. 174 Yueguang Road to try sleeping. He found that Chen Xue looked very similar to Chen Xiaoyan, who framed him and imprisoned him, and decided to pursue it secretly. After entering the haunted house, Lao Wang suddenly sent a message to Li Mu to escape immediately, telling him that three waves of people had died in the villa, and Chen Xue was one of the third wave of dead. In panic, Li Mu followed Lao Wang's instructions and hid in the third room on the first floor to avoid Chen Xue's strange entanglement.