Zhang Cuilan took the lead in making trouble in front of Liansheng Restaurant, clamoring to burn Liansheng Restaurant. Lian Haiping asked Marlboro to take out a kitchen knife, and she held the knife in front of everyone. If Zhao Datou agrees with Zhang Cuilan, he will set fire to the Liansheng Restaurant. Kong Xueli led the catcher to stop, and Hu Xuanxuan quickly told them about her discovery. However, the gold ingot from Zhao Datou's house has been removed, and even the human skin mask is gone. Kong Xueli found a skull from the stove in Zhao Datou's home. Kong Xueli asked others to check for missing persons nearby. The case became more complicated and confusing. Song Laosan took the initiative to find the door and reported to Kong Xueli again that he overheard the conversation between Zhao Datou and Zhang Cuilan last night, and the two have a close relationship.
Fang Dong meets the nervous grandfather Bell Bell. According to him, Bell Bell has not returned home until now. Kong Xueli and Song Lao San had a drink and asked about Zhang Cuilan. She accidentally learned that Zhang Cuilan was not only good at singing songs, but also a skillful hand. Fang Dong took Grandpa Little Bell to find Hu Xuanxuan, and a few people went to Dongyang Forest to look for it. Hu Xuanxuan ran back to ask Kong Xueli for help. Song Laosan pretended to be drunk and was about to assassinate the unsuspecting Kong Xueli with chopsticks. Hu Xuanxuan indirectly rescued him, Song Laosan immediately got down and continued to pretend to sleep. Later, Kong Xueli and Hu Xuanxuan found a comatose little bell in a cave full of paper figures and sacrificial supplies. The little bell said that the person who stunned her should be Zhao Datou.
Fang Dong came here afterwards, and together they took back all the things here, including the "ghost" that Hu Xuanxuan saw last time. The bones of the other parts of the skull were basically pieced together. After inspection, Fang Dong determined that the person had died for about six months, and the cause of death was the wound on the head. Kong Xueli knew that this incident was absolutely inseparable from Song Lao San. He specially pretended that he didn't know anything and took Song Lao San to the Liansheng Restaurant for dinner and drinking, and then the two went back with their shoulders on their backs. Kong Xueli deliberately let people release the paper man under the bridge, Song Laosan was so scared that Sa Yazi ran away. Kong Xueli returned to the police station and assigned tasks to everyone. Fang Dong was responsible for getting Zhang Cuilan. They were just in charge of preaching about catching water ghosts.
Song Laosan went to the vicinity of Zhao Datou's house and was caught by Kong Xueli who had been waiting there early. Fang Dong told Zhang Cuilan's poems for a day, but Zhang Cuilan couldn't help but got up to go out for the fair. Fang Dong was about to follow again, and the two walked to the river. At this time Kong Xueli was already preparing to catch ghosts, but everyone did not expect that he kicked Song Laosan, who was covering his head, into the water. Soon after, the bell rang, and a person was pulled up in the fishing net. It was Song Laosan astonishingly. Kong Xueli explained that Song Laosan had two tricks of pretending to be ghosts. One was to put on a self-made ghost mask, throw the gold ingots on the water, and dive into the water to pretend to be scary. The second is to fool people with a fake dummy on the boat.
In Xiangcheng, everyone knows that Zhao Datou and Li Shitou are good at water, but in Kong Xueli's view, Song Laosan is the best water. With his hands tied back, he could break free and swim a mile underwater. The next day when Song Lao San refused to plead guilty, Kong Xueli told his motive for committing the crime. Li Shitou was killed because he knew Song Lao San had killed Zhao Datou. Gao Yidao thought of something and wanted to report Song Laosan, but he was killed first.