Das heilige Experiment is a 1966 movie that tells the story of a controversial social experiment conducted in a small German town in the early 20th century. The experiment involves mixing people from different social classes and backgrounds to test the theory that a harmonious society can be achieved through mutual understanding and empathy. As tensions rise and societal norms are challenged, the experiment becomes a catalyst for intense personal and collective transformations. The movie explores themes of prejudice, power dynamics, and the human capacity for change.