Public security special agent Li Xu went undercover in a drug trafficking group to destroy the drug lord's den. In order to find out the dealer of the drug trade, Li Xu deliberately approached the boss's lover Amei, but was discovered. Amei ruthlessly kidnapped Zhang Siyi, the sister of Liu Xu's good brother, to threaten Li Xu to help her transport drugs. Amei tied a bomb to Zhang Siyi and monitored Li Xu with video to prevent him from calling the police halfway. The bomb was set to explode automatically after two hours. Li Xu had to end this life-and-death game before the bomb exploded...