Robert Bennett, an idle socialite, wagers $30,000 with his three friends that he can tell nothing but the truth for a period of one week. His troubles begin at a party where his friends' wives question Robert about their husbands' outside activities. Forced to tell the truth, Robert's veracity results in domestic disharmony. Consequently, his vengeful trio of friends pursue Robert for the next five days, intent upon silencing him until the week is over. They finally resort to committing Robert to an insane asylum where he escapes with the aid of Dolly, who is in love with him because she believes that Robert is a society thief.

Young Victor Jones of America is discovered to be an exact lookalike for England's Earl of Rochester, a circumstance which results in Jones deciding to replace the Earl after an unfortunate accident.