Monika (German: Eine Mutter kämpft um ihr Kind, lit. 'A Mother Fights for Her Child') is a 1938 German melodrama film directed and written by Heinz Helbig. The story centers on a singer who relinquishes her illegitimate daughter to a German engineer in São Paulo to pursue her career, only to return eight years later as a celebrated film star and wife of a prominent surgeon, demanding custody after encountering the child on a film set.

Peter, Paul, and Heinz have been best friends since early childhood; the first two are treated almost like Heinz's own children by his parents, Mr. and Mrs. Liebitz. One day, a terrible accident occurs during a regatta: Heinz falls into the water and drowns. Despite this horrific event, the bond between Mr. and Mrs. Liebitz and Paul and Peter only intensifies. The elder Liebitz owns a musical instrument manufacturing business, and since Heinz will no longer be able to take over the company as originally planned, Franz Liebitz comes up with the idea that Peter and Paul should run the business instead. The two young men receive training in instrument making, but they don't want to become dependent on him and decide to earn their living by repairing instruments and/or as music teachers.

Eduard Winkelmann, the owner of an apartment building in Munich, never tires of making life difficult for his renters. One day, a young woman, Erika, shows up at his door. She is the illegitimate daughter of a long-past love affair.

Nazi propaganda film chronicling the plight of Germans caught by the outbreak of war in 1939 and their frantic attempts to return to the Fatherland to join the battle.

At a ball at the Metropol, the married Margit gives a harmless kiss to a one-time friend from her childhood and cousin, Eberhard. The two notice, however, that Margit's ill and jealous husband observed them from a distance, because he recognized the coat she recently purchased. Quickly, Margit asks the salesgirl Trude to put on her coat and meet Eberhard in the lobby. Things take a decidedly different turn, however, when Trude and Eberhard fall madly in love with each other.