20 years earlier, Richard's student was Mohamed. Frustrated at having to work in the factory while he dreams of becoming a writer, he regains hope thanks to Isabelle who wants to help him. But a resounding intrusion changes their meeting.

Return 25 years earlier, to the origins of the facts. Isabelle and Richard settle into their house, full of desire and ambition. But time passes and their unequal professional success creates an imbalance that is difficult to overcome.