A mother of two gathers her loved ones to celebrate her birthday in her big house near the Loire Valley. The festivities are disrupted by the arrival of her daughter, who is known for her unpredictable outbursts.

Simon, a well-known French filmmaker, starts shooting his next film. A story about workers fighting to protect their factory from being relocated. But nothing goes as planned... His producer Viviane wants to rewrite the ending and is threatening to cut the budget; his own crew goes on strike; his personal life is in shambles; and to make things worse, his lead actor Alain is an egocentric jerk. Joseph, an extra who wants to get into the film industry, agrees to direct the making of and shoot the behind-the-scenes. He takes his role very seriously and starts following around the crew, capturing all this mess... What follows is proof that the making of can sometimes be far better than the film itself!