In a small German village, a cunning and manipulative man who calls himself Don Juan manages to infiltrate the life of a wealthy family. Apparently, his goal is to help the head of the family, a warm-hearted but naive bourgeois. However, his true intentions are filled with greed and deception. Through a series of intrigues and a complex web of lies, Don Juan becomes the confidant of the bourgeois, earning his trust while planning to appropriate his fortune.
As the plot unfolds, the family begins to unearth the secrets that the visitor has hidden so carefully. The bourgeois's wife, intelligent and perceptive, starts to suspect that their new "friend" is not who he claims to be. Amid thrilling twists and moments of tension, family relationships are put to the test, revealing the fragility of trust and love in the context of greed.
With a masterful use of humor and social critique, the story showcases how superficiality can lead to ruin, as characters struggle to uncover the truth amid the hypocrisy that surrounds them. The film culminates in a surprising conclusion that not only reveals Don Juan's true intentions but also transforms the lives of the bourgeois and his family forever. In a world where appearances deceive, the value of authenticity becomes the most important lesson.