A young woman Chen Meng (played by Jiao Ting) fell to her death in the community. The scene of the crime is full of doubts and the cause of death is unknown. Not long after, six people with different identities came to this clubhouse in the suburb because of an invitation. After a simple communication, they knew that the contact of the six people was Chen Meng. Xie Lei (played by Li Yueming) is Chen Meng's ex-boyfriend, Li Jingwen (played by Zhang Daming) is a company boss who has an affair with Chen Meng, and Hu Jing (played by Hao Wenting) is Li Jingwen's wife. Lin Xi (played by Hu Sang), the company's sales consultant, is Chen Meng's best friend, and Chen Lu is Chen Meng's sister. In order to find out why they were called here, someone proposed to talk about everyone's whereabouts on the night of Chen Meng's death, and to judge the cause of Chen Meng's death, as if this was the reason why the mysterious person summoned them
In the end, everyone was surprised to find that Chen Meng committed suicide, because she just found out that she had cancer and Li Jingwen wanted to break up with her and come back Family, at this time Chen Meng found out that her sister Chen Lu needed a lot of money, and the relationship between sisters who had depended on each other since childhood was the best, so she bought an insurance policy. After knowing that suicide would not be compensated, Chen Meng created a crime scene.