The rich Duke Brothers wager on whether a born loser like Billy Ray Valentine, a hustler from the ghetto, can become as successful as Winthorpe, a wealthy investment executive, if put in the proper environment--and would a prig like Winthorpe turn to a life of crime if he were to lose it all.

Ace Venture pet detective: Jim Carrey is on the case to find the Miami Dolphins' missing mascot and quarterback Dan Marino. He goes eyeball to eyeball with a man-eating shark, stakes out the Miami Dolphins and woos and wows the ladies. Ace Ventura when nature calls: Ace Ventura sets out on a mission to investigate the disappearance of a rare white bat, the symbol of an African tribe.