Stockbroker Steve Bennett (Hope) is the new guy at his Miami firm where he's approached by Gwen (Goddard), the niece of his boss T.T. Ralston (Arnold). She's raised $10,000 for charity and wants Steve to double the money since her uncle has promised to match the sum. Except Ralston is trying to welsh on his promise by betting Steve that he can't tell the truth for 24 hours, which gets Steve into all sorts of trouble. The third Hope/Goddard pairing.