Late August. A father and his two daughters enjoy their last day of holidays. Roaming the beach, they each look for one last summer fling.

Transport Minister Bertrand Saint-Jean is awoken in the middle of the night by his head of staff. A bus has gone off the road into a gully. He has no choice but to go to the scene of the accident. Thus begins the odyssey of a politician in a world that is increasingly more complex and hostile.