Dennis O'Hara is a poverty-stricken Irishman who believes that if he comes to America he will immediately land a job as a policeman. So he manages to scrape together the funds to get him to Manhattan, and leaves his sweetheart Katie O'Grady behind while he makes his fortune. Naturally he discovers that joining the force isn't as easy as he expected, and when he does finally get in, he winds up in trouble because of the graft collections of his boss.

When playwright Curtis de Forest Ralston becomes enamored of actress Viola Strathmore, who is to appear in his play Vanity, Viola induces him to change certain parts and give her more lines. Curtis, who is not as talented as he believes himself to be, fails at his job but is saved by his wife Anita, a former actress, who has forsaken her career for marriage. Anita and her old manager, Bruce Winthrope, fashion the play to suit Viola, and Vanity becomes a huge success. The play's triumph enlarges Curtis's ego even further, and he deserts Anita for Viola.

A WWI English officer is inspired the night before a dangerous mission by a vision of Joan of Arc, whose story he relives.

Cossack Anton Kazoff seeks revenge for the wrongs inflicted on his sister Olga.