To Matthieu

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Francis and his sons Eric and Matthieu all work in the same factory: Francis on the machine, Eric at the drawing board, and Matthieu on the computer. One day, after 30 years, Francis is dismissed without notice for failing to comply with the smoking ban that was imposed overnight. Matthieu rebels against this injustice. He tries to change the company management's mind, and when that fails, he tries to mobilize his colleagues. But no one wants to make themselves vulnerable, including his brother. When his father dies in a car accident shortly afterwards, Matthieu believes it was suicide and wants to avenge him. Incognito, he seduces Claire, the boss's wife, and begins a passionate affair with her that almost turns into love - until the day she discovers him at his workplace in the factory. Claire no longer wants to see him, but Matthieu insists on a reunion.