Aglaé, a young factory worker, has only one focus in life: her job at a car crash test site. When she learns that the factory is going to be relocated abroad, she accepts, to everyone's surprise, to go to India in order to hold on to her job. Accompanied by two colleagues, she sets out on a perilous road trip to the other side of the world.

At 92 years old, Madeleine decides to set the date and conditions of her death. By telling her daughter Diane and her son Pierre, she hopes to prepare them as gently as possible but it comes as a shock, and their minds are set ablaze. Until the end, Madeleine will keep her dignity, wits, and passion for life as a course of conduct, so she can give them all, and in particular Diane, a touching “final lesson”.