Clancy and MacIntosh are a pair of stock comedy Irish and Scottish plumbers who have been partners for twenty years; but when Clancy accidentally buys some shares on margin, MacIntosh's Scotch thrift rebels and their partnership breaks up. In the meantime, their children are in love...
18-year-old Rosie Kaplan O'Grady was found as an abandoned baby by O'Grady, an Irish policeman, and Kaplan, a Jewish pawnbroker, and raised by them as their own. She is being courted by two men; prizefighter Terry Callahan and a rich socialite, Tommy Sinclair and has to choose between them.
Mabel goes home after being humiliated by a masher whom her husband won't fight. The husband goes off to a bar and gets drunk.
A womanizing city man meets Tillie in the country. When he sees that her father has a very large bankroll for his workers, he persuades her to elope with him.