Wastrel New York millionaire Roland Van Dam travels to New Orleans during Mardi Gras, looking for adventure and romance. Because the costume he is wearing includes a red gardenia, he is mistaken for escaped prisoner Emile Le Duc by a woman (who turns out to be a long-lost cousin) who was to meet Le Duc, who was to be wearing a red gardenia. It turns out that Le Duc is the head of a vicious gang of counterfeiters, and Roland winds up getting in more adventures than he had hoped for.

Harry's bride is murdered at their wedding along with Harry's mother and father, and the good-hearted outlaw turns grimly malevolent.

Two thieves burgle a necklace from a policeman, but then begin to quarrel between themselves, leading to a shootout.

Ed Simpson has been raised in an orphanage where he has caused much trouble. He can't stand living there anymore and runs away. On the streets, he finds a friend in newsboy Mike. Mike teaches him how to survive, but inevitably Ed gets hauled into court. The judge sees potential in him and hands him over to be adopted by a young politician.