Lachende Erben (Laughing Heirs) is a 1933 German romantic comedy directed by Max Ophüls, starring Heinz Rühmann, about Peter, a salesman who stands to inherit the family sparkling wine business on the condition he abstains from alcohol for a month. The film is set in the picturesque Rhine region and follows the humorous struggles of Peter as he navigates the sparkling wine business and a potential romance with a rival's daughter, all while trying to fulfill the will's unusual terms.