Tout s'explique

It's their daughter's wedding day, and Francis and Rosalie should be the happiest parents in the world. However, the mood is not festive. Rosalie reproaches her husband for dancing all evening with a woman whom no one knows. Caught red-handed, Francis is forced to admit that this woman is none other than his mistress. Rosalie is not going to take this lying down! Time for retaliation.

On the verge of concluding the trial of his life, Pierre Maillard, a cold and rigid lawyer, is forced to spend a day with the most unpredictable man imaginable. A day of madness, which seems absolutely endless to him, and where anything can happen, even the most improbable things. So why does Pierre's secretary always trip over the carpet? And why does his boss always ask him the same thing? Finally, how is it that Pierre always receives the same phone call?