The daily duties of the patrol officers on the highway, in addition to catching car thieves and chasing and fining speeding vehicles, are also full of fun. Today, Frank (Michael Pena), a well-known highway patrolman in California, is not only a hot-tempered guy who handles cases, but also has a bad temper that his leaders can hardly tolerate, but his peers give him the nickname "Mailbag", which means that he can always solve big troubles in time, but he will also cause big troubles for others. At the same time, another patrolman named Baker (Dax Shepard) is also controversial. Not only does he act in a high-profile manner and speak restricted language, but his temper is also very similar to Frank. But the two of them are quite dedicated and responsible in handling the case. Now, the two have been arranged as new partners. With the help of modification masters, they have also started a big arrest on California highways with their excellent car skills...