At an elegant dinner attended by thirteen guests, the atmosphere becomes tense when one of them, an iconic writer, is found dead in his own mansion. The plot revolves around a clever Belgian detective, who, with her sharp nose for mysteries, is invited to the evening. However, the dinner turns into the perfect setting for a crime that seems riddled with secrets and grudges. Each of the attendees has something to hide, and it soon becomes clear that several of them have powerful reasons to wish for the writer's death.
As the characters parade one after another, the detective uses her keen intuition and her ability to analyze human psychology, leading her to unexpected clues. With witty dialogues and a tense atmosphere, the film reveals that trust is a luxury few can afford. As the investigation unfolds, alliances break and loyalties are questioned, revealing that often, those who appear to be allies are also the most likely to betray. In this deadly web of intrigue and entanglements, the detective not only seeks to solve the case but also has to confront her own demons. With unexpected twists around every corner, the film keeps the viewer on edge until the very last minute, demonstrating that the truth is darker than it seems.