On New Year's Eve, widow Zhang Caixia (played by Yuan Jiamin) and her mother-in-law Li Yuemei mysteriously disappeared in Liujiazhai. After reporting the case, the police investigated and listed the village quarry director Liu Dongmin (played by Chen Baoyuan), unemployed vagrant Liu Fang (played by Ba Duo), and quarry blaster Liu Shanpao (played by Sang Ping) as suspects, but all three denied it. The key at this time is to find Zhang Caixia and Li Yuemei. Where are the bodies hidden? A series of seemingly true and false, confusing evidence is placed in front of everyone. Which one is the real evidence?