Union - Die besten aller Tage

This documentary follows the rise of the East German football club Union Berlin. After joining the Bundesliga in 2019, the team from Köpenick achieved a surprising qualification for the Champions League four years later. The film examines the tension between the club's traditional identity and the economic and sporting pressures that accompany such rapid success. By focusing on the staff working behind the scenes and the unwavering support of the fan base, the story explores how the organization maintains its character while evolving.

Directed by Annekatrin Hendel, this is the first film listed in her chronology, followed by Hiddensee in 2026. Hendel also served as a producer and co-writer alongside Jörg Hauschild. The production was a collaboration between WDR, RBB, and It Works!. The cast features several individuals appearing as themselves, including Urs Fischer, Sami Khedira, Robin Knoche, Janik Haberer, Christopher Trimmel, and Kevin Behrens.

Released on April 4, 2024, the film has a runtime of 121 minutes. It has received a positive reception from its audience, holding a rating of 7.2/10 on IMDb based on 40 votes.