The Finnegans follow the Flannigans from Ireland to the U.S. Danny Finnegan, Sr., goes to work for Patrick Flannigan, Sr., while young lovers Molly Finnegan and Flannigan, Jr., are reunited. A feud erupts between the families when the Finnegans fall heir to a fortune and snub the Flannigans. The inheritance proves to be an error, and the Finnegans resume their modest way of life. All is forgiven, and amity between the families is assured by the marriage of Molly and Flannigan, Jr.