Li Ming is a young detective who received a missing case. The protagonist of the case was Li Zixuan, Li Zhenglin's only daughter. In the eyes of her family, Li Zixuan was a happy and perfect girl, but her disappearance did not cause the big commotion expected by her parents, but instead brought a strange indifference. Li Ming's investigation gradually revealed the unusual nature of the case. People in the town seemed to be hiding something, and Li Zixuan's family was particularly uncooperative. As Li Ming investigated in depth, he gradually felt that there was a bigger conspiracy waiting for him behind the scenes.