Used car salesman Rudy Russo (Kurt Russell) is happy to get a job at the dealership owned by Luke Fuchs (Jack Warden), but he is unaware what he's letting himself in for. Luke is in hot competition with his twin brother Ray (Warden again), a fellow car dealer who is dead set on taking over Luke's business. The two brothers subsequently begin a madcap price-cutting war, using all kinds of dirty tricks to undermine the other's chance, and poor Rudy is caught in the middle, but then Rudy also knows a few tricks of his own.