Truck driver Zheng Daqian was transporting 20 tons of industrial lime powder. He was mistaken by villagers for drugs and was slandered by the entire Internet as a drug dealer. He called the police, approached the manufacturer, and appealed to the village chief, but all met with obstacles. With the help of Dr. Li, he hired a lawyer and collected ironclad evidence such as surveillance, freight bills, and hospital reports, and disclosed the truth to reverse public opinion. In the end, the court ruled that the villagers were guilty of robbery and defamation, and compensated and apologized. Zheng Daqian was freed from his injustice and restarted his life.