Synopsis：Undercover narcotics officer Gao Yuan finally returns to duty after arresting major drug lord Duan Ming in a drug bust, reuniting with his goddaughter Chu Chu. Duan Ming's younger brother, Duan Qing, kidnaps Chu Chu in an attempt to force the police to release his brother within six hours. Following orders from his superiors, Gao Yuan teams up with criminal police officer Bai Yingying to rescue Chu Chu. During the operation, Gao Yuan's seemingly reckless actions raise doubts in Bai Yingying's mind about his judgment. Eventually, Gao Yuan is expelled from the task force after failing to capture Duan Ming's third brother, Duan Xin, alive. In a desperate bid to save Chu Chu, Gao Yuan attempts to fake a release, only to be betrayed by Chu Chu's mother, Wang Yuran. Strapped with explosives, Gao Yuan must turn the tide within one hour.