Like most small-time compulsive gamblers, cabbie Jay Trotter (Dreyfus) tends to lose whenever he bets and has promised his wife Pam (Teri Garr) that he's given up betting at the track. But when he gets a tip on a sure thing the following weekend, he's sure he can't lose. He wins on a fifty dollar bet, marking the beginning of a streak that nets him thousands of dollars and in the process, Jay moves up from the beer-swigging set to the caviar crowd. This is a day of real ups and downs for him and his betting buddy Looney (David 'Buster Poindexter' Johansen). Meanwhile, Jay's constant gambling is costing him his marriage. Will Jay and his wife reconcile