The dancer and prostitute Lulu is the mistress of the newspaper owner Dr. Ludwig Schön and lives in an apartment paid for by him. When her former "protector" Schigolch visits Lulu, he brings the opportunist agent Rodrigo Quast that invites Lulu to dance in a play. Dr. Schön tells Lulu that he will marry the aristocratic Charlotte Marie Adelaide v. Zarnikow and mesmerizing Lulu forces him to marry her. However, in the wedding party, Dr. Schön finds Lulu partying with Schigolch and Rodrigo Quast in their bedroom and he gets his pistol and forces Lulu to shoot him. Lulu is arrested and almost six months later, she goes to the tribunal for trial. Despite the testimony of Dr. Schön's son Alwa Schön and his friend Countess Anna Geschwitz, Lulu is sentenced to five years in prison in a prejudicial verdict. But her friends cause a bedlam in court and Lulu flees. Alwa and Lulu decide to travel to Paris, but in the train, they are convinced to follow the crook Marquis Casti-Piani in the ...