The plot centers on five Vermont state troopers who seem to have more of a knack for pranks than actual police work. Most of their time is spent devising new ways of messing with the heads of the people they pull over and hazing the new recruit, "Rabbit". They also find time to torment their easily infuriated radio dispatcher, Farva, who has been exiled from patrol work because he was involved in a fight with several students during a traffic stop of a schoolbus, which is later revealed during the credits. Their days of pranking and slacking off are cut short when the troopers suddenly find themselves attempting to solve a murder, bust a drug-smuggling ring, and avoid having their post eliminated by the state's impending budget cut — resulting in their transfer, or quitting and opening up a roller disco.
The troopers have an ongoing rivalry with the local city, Spurbury, police department and constantly have fights with them ("highway cops versus the local cops"); one such dispute breaks out into an all-out fistfight, further increasing the station's chances of being shut down. The rivalry eventually results in the governor's praise for the efforts of the Spurbury PD, who had managed to keep one step ahead of the state police by making their department appear responsible for the confiscation of the smuggled drugs. Defeated, the defrocked troopers unexpectedly stumble upon the scheme in which the local police are running protection for the aforementioned drug smugglers. The film's epilogue finds the highway post still eliminated due to the budget cuts; however, the troopers become the new officers of the Spurbury PD and thus free to continue their shenanigans in and around their jurisdiction.