Samuel L. Jackson plays Detroit ATF agent Derrick Vann and Eugene Levy is Andy Fidler, a visiting dental supply salesman in this action comedy.
Vann is investigating the death of his partner, killed in a gun deal gone bad and Fidler unwittingly becomes involved. The dealer thinks that mild-mannered, nerdy Fidler is the man he's supposed to make a sale to, so Vann needs him to continue the charade until he's able to get to the big boss, and arrest the whole gang.
Fidler only wants to deliver his speech at the dental supply convention and get back home to his family in Wisconsin, so Vann has to resort to hand cuffing him to his souped up Caddy or else chase him down when the danger sends him running for his life.
Levy, with his bushy eyebrows and expressive face, is funny as a regular guy in over his head, and Jackson is smooth as the tough cop, they work well off one another.
There are a couple of silly bits, like Fidler's constantly gaseous stomach, that go on much too long. We've all seen buddy movies like this before, and although it's entertaining at times, it's mostly just a waste of good talent.