Two thieves, the Blackbird and West End Bertie, fall in love with the same girl, a French nightclub performer named Fifi. Each man tries to outdo the other to win her heart.
The department store clerk Mary prevents a robbery at the store where she works, involving a necklace belonging to a rich unmarried woman named Eva Bandy. Later, she manages via a misunderstanding to prevent a million-dollar robbery of the same woman. With the man of her dreams, who helped her foil the robberies, she is "adopted" by Eva.
Jack Duncan returns from the war in France to his wife and baby and learns that his job as a draftsman at the Loring Steel Mills has been taken. Given work in the machine shop, Jack becomes the prey of Red agitators who want him because of his popularity with soldiers. The Reds cause Jack's discharge just when his house payments come due, and when they convince him of the injustice of his situation, he joins their ranks. After learning of plans to burn the factory and Loring's home, and start a riot in the town, Jack is won over by a socialist's arguments advocating mild reforms. At a meeting of workingmen, Jack praises Americanism. He warns Loring and, with soldiers at a nearby camp, quells the riot. After a woman agitator kills her comrades and then shoots herself, Jack arrives home to save his wife from an attack by a Red ringleader. Jack is then made a foreman at the mill.
Political graft collector, David Power forced by the district attorney to leave New York takes cabaret singer Hebe Norse with him. Showing talent in a variety of professions, Power is eventually hired by a great steel manufacturer, Gail Rogers. He falls in love with Rogers' daughter Rosalie, and they marry happily until Rogers returns home with a new wife…. Hebe Norse. When Rogers discovers Hebe's past, the two men sever ties as does Rosalie. Vengefully Rogers tries to ruin one of Power's companies without success. Ultimately Rosalie forgives Power and they and their young daughter are reunited.