CIB chief inspector Zhuo Kai brothers died mysteriously, Zhuo Kai in the investigation found five undercover brother is responsible for all the lost contact. Zhuo Kai successful contact one of the missing undercover Ding Xiaojia. Ding Xiaojia resolutely promised with gangs, help Zhuo Kai looking for other missing undercover. Ding Xiaojia know Shuanghua red stick Xue Jiaqiang in the gang, Ding Xiaojia in order to get the information from which, make every attempt to Xue Jia Qiang, two people developed a based on lies, suspected imaginary feelings.