"The Blue Angel" is a 1930 German film directed by Josef von Sternberg. It tells the story of a conservative professor, Immanuel Rath, who becomes infatuated with a cabaret singer named Lola Lola. As he descends into a world of decadence, his life spirals out of control, leading to his professional and personal downfall. The film is notable for its exploration of themes such as obsession, societal change, and the clash between tradition and modernity. Marlene Dietrich's performance as Lola Lola catapulted her to stardom, making the film a significant work in early cinema and a classic of the Weimar Republic era.