Ach, du fröhliche

The story centers around Labor Director Walter Lörke, who anticipates a joyful Christmas evening with his family. His plans are disrupted when his daughter Anne arrives with her fiancé, Thomas Ostermann, leading to unexpected familial tensions. Walter's excitement turns to frustration as he learns he is to become a grandfather, complicating his traditional views and expectations.

As the evening unfolds, Walter confronts Thomas, whose critical stance on the state challenges Walter's lifelong beliefs. This confrontation reveals deeper issues, including Thomas's struggles with societal expectations and his exclusion from university despite academic success. The film captures the complexities of familial relationships against the backdrop of ideological discord, offering a unique perspective on the era's social dynamics.