Petra von Kant is a successful fashion designer — arrogant, caustic, and self-satisfied. She mistreats Marlene (her secretary, maid, and co-designer). Enter Karin, a 23-year-old beauty who wants to be a model. Petra falls in love with Karin and invites her to move in.

Hans is a street fruit peddler and born-loser. His choice of career upsets his bourgeois family, causing him to turn to drinking and violence. After recovering from a debilitating heart attack, his business finally begins to take off. However the more he becomes a credit to his family, the more depressed he becomes.