Violet and Fanny Warden’s father was ruined by a group of unethical businessmen. J. Rufus Wallingford and his associate Blackie Daw are enlisted to help the girls avenge their father’s undoing. Target number one is a businessman named Falls who sells portable houses. Wallingofrd invests in Falls’ company and gains his confidence. A farmer arrives and orders a house contingent on some improvements. Wallingford happens to own the patents on such items and sells them to Falls for $125,000. As the house is completed Onion Jones (another Wallingford associate) arrives and claims he owns the patents. He attaches the house and Falls’ business for patent infringement. Falls is ruined and it is discovered that the farmer is none other than Blackie Daw; the farmer’s daughters are in reality the Warden girls.