Junior police constable Karl-Heinz has just been given a telling-off by his boss for allegedly botching a major operation against car thieves. Now he senses an opportunity to rehabilitate himself when a gang of high-flying highway speeders catch his eye during a traffic check. Karl-Heinz decides to go undercover with the gang and gets to know their colorful characters. He soon takes more pleasure in the illegal speeding than is good for his health and career.