Dennis O'Neill comes to America from Ireland at the request of his wealthy aunt, who intends to make him heir to the family fortune accrued from a junk business, but Mrs. Bryan objects to the presence of his widowed mother, who reminds her of their humble origins. Claire, niece of Mrs. Bryan, supports Dennis in his determination not to abandon his mother, and he installs Mrs. O'Neill in the nearby apartment of Tim Donohue, a friend from the old country, from whose window she can signal to Dennis. Dennis discovers that Hansen, manager of the junk firm, and his assistant, Richey, a suitor of Claire's, are padding the payroll. He finds that his affections for Claire are reciprocated, but Richey informs her that he is keeping another girl in the Donohue apartment. Dennis produces his mother, takes vengeance on Richey, and wins Claire -- all to the satisfaction of Mrs. Bryan.