A silver-gray sedan drives into a toll station, and toll collector Xu Zhiwei notices an abnormality in the rear wheel, decisively sounding the highest alert. The car owner turns out to be a group chairman who donated 300 million! Facing questioning, complaints, and pressure to let it pass, she insists on inspecting it, only to find no bomb inside the car, while the real danger has long been hidden along the route. A crazy plan born from the pain of losing a daughter is approaching eleven o'clock. Two out-of-touch maintenance workers and three hidden dangers—can she stop the tragedy from repeating at the last moment?