Three kidnapping cases intertwine the fate of two women. Three years ago, Lin Xiaoyang's (Lin Jiaxin) brother was kidnapped, and the one who handled the kidnapping case was female inspector He Wanzhen (Liu Ruoying). Three years later, He Wanzhen took over the investigation of a kidnapping case, but the case accidentally triggered another kidnapping case. This time, the kidnappers deployed carefully and successfully avoided the police's tracking and monitoring. They also knew how to manipulate Wanzhen's psychology. Wanzhen, just like Xiaoyang back then, step by step entered into a psychological wrestling battle with the kidnappers.