Pat is a plumber in love with Maggie. She won't have him till she hears that he is heir to a million. Then she wants him but he turns her down. He gives a dinner to celebrate, but in the midst of the festivities a note arrives from his lawyer saying that Maggie is suing him for breach of promise. He decides to marry her. She rules the roost, and he is not allowed to have his friends in the house. She forbids O'Rourke to have anything to do with Pansy, her daughter. She gives a musical party, and does not invite the plumbers. Pat does, and he and his friends break up the whole thing with gas pipe for weapons. After this Maggie is subdued.
—Moving Picture World synopsis