Louis Trapp, the next victim, is one of the clique of criminal financiers whose manipulations have caused the death of the charming Violet and Fanny Warden's father. A lucrative mail-order business is used as the "come on" by J. Rufus and Blackie, who, by mailing to themselves hundreds of ten dollar bills, excite the cupidity of Trapp. Onion Jones, a Wallingford confederate, pretending to mistake Trapp as the owner of the company, offers him $60,000 for it, and the crafty Trapp, scenting an enormous profit in the deal, rushes off and buys the business from Wallingford for $50,000, hoping to turn it over to Onion for a $10,000 gain. The postal authorities get on to the mail order business just as soon as Trapp becomes its proprietor, and things look dark for the amateur plunger.
—Moving Picture World synopsis