In a small French village, the life of an elderly man, a retired individual who seems to have seen it all, takes an unexpected turn when he decides to sell his house to a young entrepreneur. The "viager" contract promises that the seller can live in his home until his death, while the buyer will pay a monthly amount. However, things become complicated when the old man, despite his age, shows a surprising vitality that confounds the young man.
As the story progresses, the relationship between the two characters turns into a game of strategy. The entrepreneur, eager to recoup his investment, watches with frustration as the old man seems to have iron health and boundless energy. On the other hand, the elderly man, with his cunning and wisdom, begins to toy with the young man's expectations, leading him into increasingly absurd and amusing situations.
The comedy intertwines with moments of reflection on life, death, and the passage of time, exposing the different ways youth and old age perceive these concepts. As the plot unfolds, the viewer is invited to question their own beliefs about life and the value of relationships, regardless of age. With clever humor and endearing characters, the story becomes a heartfelt and bittersweet portrait of human existence.